New York City Subway
|Owner||City of New York|
|Area served||The Bronx, Brooklyn, Manhattan, and Queens|
|Locale||New York City|
|Transit type||Rapid transit|
|Number of lines||
(1 planned) [note 2]
|Number of stations||
MTA total count)
424 unique stations [note 4]  (when compared to international standards)
14 planned [note 3]
|Daily ridership||5,580,845 (weekdays, 2017)
3,156,673 (Saturdays, 2017) 
2,525,481 (Sundays, 2017) 
|Annual ridership||1,727,366,607 (2017) |
|Began operation||October 27, 1904|
( Original subway)
July 3, 1868
(first railroad operation) [note 5]
|Operator(s)||New York City Transit Authority (NYCTA)|
|Number of vehicles||6,418 |
|Headway||Peak hours: 2–5 minutes
Off-peak: 10–20 minutes 
|System length||248 miles (399 km)
665 mi (1,070 km) 
(track length, revenue)
850 mi (1,370 km) 
(track length, total)
|Track gauge||4 ft 8 1⁄2 in (1,435 mm) standard gauge |
|Electrification||600–650 V ( DC) third rail; normally 625V  |
|Average speed||17.4 mph (28.0 km/h) |
|Top speed||55 mph (89 km/h) |
The New York City Subway is a rapid transit system owned by the City of New York and leased to the New York City Transit Authority,  an affiliate agency of the state-run Metropolitan Transportation Authority (MTA).  Opened on October 27, 1904, the New York City Subway is one of the world's oldest public transit systems, one of the most-used, and the one with the most stations.  The New York City Subway is the largest rapid transit system in the world by number of stations, with 472 stations in operation  (424 if stations connected by transfers are counted as single stations).  Stations are located throughout the boroughs of Manhattan, Brooklyn, Queens, and the Bronx.
The system has operated 24/7 service every day of the year (barring emergencies and disasters) throughout most of its history; since May 6, 2020, it has been temporarily closed to the public from 1 a.m. to 5 a.m. to disinfect trains and stations due to the COVID-19 pandemic in New York City. By annual ridership, the New York City Subway is the busiest rapid transit system in both the Western Hemisphere and the Western world, as well as the ninth-busiest rapid transit rail system in the world.  In 2017, the subway delivered over 1.72 billion rides, averaging approximately 5.6 million daily rides on weekdays and a combined 5.7 million rides each weekend (3.2 million on Saturdays, 2.5 million on Sundays).  On September 23, 2014, more than 6.1 million people rode the subway system, establishing the highest single-day ridership since ridership was regularly monitored in 1985.  [note 6]
The system is also one of the world's longest. Overall, the system contains 248 miles (399 km) of routes,  translating into 665 miles (1,070 km) of revenue track  and a total of 850 miles (1,370 km) including non-revenue trackage.  Of the system's 28 routes or "services" (which usually share track or "lines" with other services), 25 pass through Manhattan, the exceptions being the G train, the Franklin Avenue Shuttle, and the Rockaway Park Shuttle. Large portions of the subway outside Manhattan are elevated, on embankments, or in open cuts, and a few stretches of track run at ground level. In total, 40% of track is above ground.  Many lines and stations have both express and local services. These lines have three or four tracks. Normally, the outer two are used by local trains, while the inner one or two are used by express trains. Stations served by express trains are typically major transfer points or destinations. 
As of 2018 [update], the New York City Subway's budgetary burden for expenditures was $8.7 billion, supported by collection of fares, bridge tolls, and earmarked regional taxes and fees, as well as direct funding from state and local governments.  Its on-time performance rate was 80% during weekdays. 
Alfred Ely Beach built the first demonstration for an underground transit system in New York City in 1869 and opened it in February 1870.   His Beach Pneumatic Transit only extended 312 feet (95 m) under Broadway in Lower Manhattan operating from Warren Street to Murray Street  and exhibited his idea for an atmospheric railway as a subway. The tunnel was never extended for political and financial reasons.  Today, no part of this line remains as the tunnel was completely within the limits of the present day City Hall station under Broadway.    
The Great Blizzard of 1888 helped demonstrate the benefits of an underground transportation system.  A plan for the construction of the subway was approved in 1894, and construction began in 1900.  Even though the underground portions of the subway had yet to be built, several above-ground segments of the modern-day New York City Subway system were already in service by then. The oldest structure still in use opened in 1885 as part of the BMT Lexington Avenue Line in Brooklyn      and is now part of the BMT Jamaica Line.  The oldest right-of-way, which is part of the BMT West End Line near Coney Island Creek, was in use in 1864 as a steam railroad called the Brooklyn, Bath and Coney Island Rail Road.   
The first underground line of the subway opened on October 27, 1904, almost 36 years after the opening of the first elevated line in New York City (which became the IRT Ninth Avenue Line).    The 9.1-mile (14.6 km) subway line, then called the "Manhattan Main Line", ran from City Hall station northward under Lafayette Street (then named Elm Street) and Park Avenue (then named Fourth Avenue) before turning westward at 42nd Street. It then curved northward again at Times Square, continuing under Broadway before terminating at 145th Street station in Harlem.  Its operation was leased to the Interborough Rapid Transit Company and over 150,000 passengers  paid the 5¢ fare to ride it on the first day of operation. 
By the late 1900s and early 1910s, the lines had been consolidated into two privately owned systems, the Brooklyn Rapid Transit Company (BRT, later Brooklyn–Manhattan Transit Corporation, BMT) and the Interborough Rapid Transit Company (IRT). The city built most of the lines and leased them to the companies.  The first line of the city-owned and operated Independent Subway System (IND) opened in 1932;  this system was intended to compete with the private systems and allow some of the elevated railways to be torn down but stayed within the core of the City due to its small startup capital.  This required it to be run 'at cost', necessitating fares up to double the five-cent fare popular at the time. 
In 1940, the city bought the two private systems. Some elevated lines ceased service immediately while others closed soon after.  Integration was slow, but several connections were built between the IND and BMT;    these now operate as one division called the B Division. Since the IRT tunnels, sharper curves, and stations are too small and therefore can not accommodate B Division cars, the IRT remains its own division, the A Division.  Many passenger transfers between stations of all three former companies have been created, allowing the entire network to be treated as a single unit. 
During the late 1940s, the system recorded high ridership, and on December 23, 1946, the system-wide record of 8,872,249 fares was set. :73
The New York City Transit Authority (NYCTA), a public authority presided by New York City, was created in 1953 to take over subway, bus, and streetcar operations from the city, and placed under control of the state-level Metropolitan Transportation Authority in 1968.  
Organized in 1934 by transit workers of the BRT, IRT, and IND,  the Transport Workers Union of America Local 100 remains the largest and most influential local of the labor unions.  Since the union's founding, there have been three union strikes over contract disputes with the MTA:  12 days in 1966,   11 days in 1980,  and three days in 2005.  
By the 1970s and 1980s, the New York City Subway was at an all-time low.   Ridership had dropped to 1910s levels, and graffiti and crime were rampant. Maintenance was poor, and delays and track problems were common. Still, the NYCTA managed to open six new subway stations in the 1980s,   make the current fleet of subway cars graffiti-free, as well as order 1,775 new subway cars.  By the early 1990s, conditions had improved significantly, although maintenance backlogs accumulated during those 20 years are still being fixed today. 
Entering the 21st century, progress continued despite several disasters. The September 11 attacks resulted in service disruptions on lines running through Lower Manhattan, particularly the IRT Broadway–Seventh Avenue Line, which ran directly underneath the World Trade Center.  Sections of the tunnel, as well as the Cortlandt Street station, which was directly underneath the Twin Towers, were severely damaged. Rebuilding required the suspension of service on that line south of Chambers Street. Ten other nearby stations were closed for cleanup. By March 2002, seven of those stations had reopened. Except for Cortlandt Street, the rest reopened on September 15, 2002, along with service south of Chambers Street.    Cortlandt Street reopened on September 8, 2018.  
In October 2012, Hurricane Sandy flooded several underwater tunnels and other facilities near New York Harbor, as well as trackage over Jamaica Bay. The immediate damage was fixed within six months but long-term resiliency and rehabilitation projects continue. Among the more notable Sandy recovery projects include the restoration of the new South Ferry station from 2012 to 2017; the full closure of the Montague Street Tunnel from 2013 to 2014; and the partial 14th Street Tunnel shutdown from 2019 to 2020. 
When the IRT subway debuted in 1904,   the typical tunnel construction method was cut-and-cover.  The street was torn up to dig the tunnel below before being rebuilt from above.  Traffic on the street above would be interrupted due to the digging up of the street.  Temporary steel and wooden bridges carried surface traffic above the construction. 
Contractors in this type of construction faced many obstacles, both natural and man-made. They had to deal with rock formations and groundwater, which required pumps. Twelve miles of sewers, as well as water and gas mains, electric conduits, and steam pipes had to be rerouted. Street railways had to be torn up to allow the work. The foundations of tall buildings often ran near the subway construction, and in some cases needed underpinning to ensure stability. 
This method worked well for digging soft dirt and gravel near the street surface.  Tunnelling shields were required for deeper sections, such as the Harlem and East River tunnels, which used cast-iron tubes. Rock or concrete-lined tunnels were used on segments from 33rd to 42nd streets under Park Avenue; 116th to 120th Streets under Broadway; 145th to Dyckman Streets (Fort George) under Broadway and St. Nicholas Avenue; and 96th Street and Broadway to Central Park North and Lenox Avenue. 
About 40% of the subway system runs on surface or elevated tracks, including steel or cast iron elevated structures, concrete viaducts, embankments, open cuts and surface routes.  As of 2019 [update], there are 168 miles (270 km) of elevated tracks.  All of these construction methods are completely grade-separated from road and pedestrian crossings, and most crossings of two subway tracks are grade-separated with flying junctions. The sole exceptions of at-grade junctions of two lines in regular service are the 142nd Street  and Myrtle Avenue junctions, whose tracks intersect at the same level, as well as the same-direction pairs of tracks on the IRT Eastern Parkway Line at Rogers Junction.  
More recent projects use tunnel boring machines, which increase the cost. They minimize disruption at street level and avoid already existing utilities.  Examples of such projects include the extension of the IRT Flushing Line     and the IND Second Avenue Line.    
Since the opening of the original New York City Subway line in 1904,   various official and planning agencies have proposed numerous extensions to the subway system. One of the more expansive proposals was the " IND Second System", part of a plan to construct new subway lines in addition to taking over existing subway lines and railroad rights-of-way. The most grandiose IND Second Subway plan, conceived in 1929, was to be part of the city-operated IND, and was to comprise almost 1⁄3 of the current subway system.   By 1939, with unification planned, all three systems were included within the plan, which was ultimately never carried out.   Many different plans were proposed over the years of the subway's existence, but expansion of the subway system mostly stopped during World War II. 
Though most of the routes proposed over the decades have never seen construction, discussion remains strong to develop some of these lines, to alleviate existing subway capacity constraints and overcrowding, the most notable being the proposals for the Second Avenue Subway. Plans for new lines date back to the early 1910s, and expansion plans have been proposed during many years of the system's existence.  
After the IND Sixth Avenue Line was completed in 1940,  the city went into great debt, and only 33 new stations have been added to the system since, nineteen of which were part of defunct railways that already existed. Five stations were on the abandoned New York, Westchester and Boston Railway, which was incorporated into the system in 1941 as the IRT Dyre Avenue Line.  Fourteen more stations were on the abandoned LIRR Rockaway Beach Branch (now the IND Rockaway Line), which opened in 1955.  Two stations ( 57th Street and Grand Street) were part of the Chrystie Street Connection, and opened in 1968;   the Harlem–148th Street terminal opened that same year in an unrelated project.  Six were built as part of a 1968 plan: three on the Archer Avenue Lines, opened in 1988,  and three on the 63rd Street Lines, opened in 1989.  The new South Ferry station was built and connected to the existing Whitehall Street–South Ferry station in 2009.  The one-stop 7 Subway Extension to the west side of Manhattan, consisting of the 34th Street–Hudson Yards station, was opened in 2015,   [note 7] and three stations on the Second Avenue Subway in the Upper East Side were opened in the beginning of 2017. 
|Annual passenger ridership|
|    |
Many rapid transit systems run relatively static routings, so that a train "line" is more or less synonymous with a train "route". In New York City, routings change often, for various reasons. Within the nomenclature of the subway, the "line" describes the physical railroad track or series of tracks that a train "route" uses on its way from one terminal to another. "Routes" (also called "services") are distinguished by a letter or a number and "Lines" have names. Trains display their route designation. 
There are 28 train services in the subway system, including three short shuttles. Each route has a color and a local or express designation representing the Manhattan trunk line of the particular service.   New York City residents seldom refer to services by color (e.g., Blue Line or Green Line) but out-of-towners and tourists often do.   
The 1, C, G, L, M, R, and W trains are fully local and make all stops. The 2, 3, 4, 5, A, B, D, E, F, N, and Q trains have portions of express and local service. J, Z, 6, and 7 trains vary by day or time of day. The letter S is used for three shuttle services: Franklin Avenue Shuttle, Rockaway Park Shuttle, and 42nd Street Shuttle.  
Though the subway system operates on a 24-hour basis,  during late night hours some of the designated routes do not run, run as a shorter route (often referred to as the 'shuttle train' version of its full-length counterpart) or run with a different stopping pattern. These are usually indicated by smaller, secondary route signage on station platforms.   Because there is no nightly system shutdown for maintenance, tracks and stations must be maintained while the system is operating. This work sometimes necessitates service changes during midday, overnight hours, and weekends.   [note 8]
When parts of lines are temporarily shut down for construction purposes, the transit authority can substitute free shuttle buses (using MTA Regional Bus Operations bus fleet) to replace the routes that would normally run on these lines.  The Transit Authority announces planned service changes through its website,  via placards that are posted on station and interior subway-car walls,  and through its Twitter page. 
|Primary Trunk line||Color  ||Pantone ||Hexadecimal||Service bullets|
|IND Eighth Avenue Line||Vivid blue||PMS 286||#0039a6|| |
|IND Sixth Avenue Line||Bright orange||PMS 165||#ff6319|| |
|IND Crosstown Line||Lime green||PMS 376||#6cbe45|
|BMT Canarsie Line||Light slate gray||50% black||#a7a9ac|
|BMT Nassau Street Line||Terra cotta brown||PMS 154||#996633|||
|BMT Broadway Line||Sunflower yellow||PMS 116||#fccc0a|| |
|IRT Broadway–Seventh Avenue Line||Tomato red||PMS 185||#ee352e|| |
|IRT Lexington Avenue Line||Apple green||PMS 355||#00933c|| |
|IRT Flushing Line||Raspberry||PMS Purple||#b933ad|||
|IND Second Avenue Line||Turquoise||PMS 638||#00add0|
|Shuttles||Dark slate gray||70% black||#808183|
Current official transit maps of the New York City Subway are based on a 1979 design by Michael Hertz Associates.  The maps are not geographically accurate due to the complexity of the system (Manhattan being the smallest borough, but having the most services), but they do show major city streets as an aid to navigation. The newest edition took effect on June 27, 2010, and makes Manhattan bigger and Staten Island smaller, with minor tweaks happening to the map when more permanent changes occur.   Earlier diagrams of the subway (the first being produced in 1958) had the perception of being more geographically inaccurate than the diagrams today. The design of the subway map by Massimo Vignelli, published by the MTA between 1972 and 1979, has become a modern classic but the MTA deemed the map flawed due to its placement of geographical elements.  
A late night-only version of the map was introduced on January 30, 2012.  On September 16, 2011, the MTA introduced a Vignelli-style interactive subway map, "The Weekender",  to its website;  as the title suggests,  the online map provides information about any planned work, from late Friday night to early Monday morning.  
Out of the 472 stations, 470 are served 24 hours a day. [note 9] Underground stations in the New York City Subway are typically accessed by staircases going down from street level. Many of these staircases are painted in a common shade of green, with slight or significant variations in design.  Other stations have unique entrances reflective of their location or date of construction. Several station entrance stairs, for example, are built into adjacent buildings.  Nearly all station entrances feature color-coded globe or square lamps signifying their status as an entrance. 
Many stations in the subway system have mezzanines.  Mezzanines allow for passengers to enter from multiple locations at an intersection and proceed to the correct platform without having to cross the street before entering. Inside mezzanines are fare control areas, where passengers physically pay their fare to enter the subway system.   In many older stations, the fare control area is at platform level with no mezzanine crossovers.  Many elevated stations also have platform-level fare control with no common station house between directions of service. 
Upon entering a station, passengers may use station booths (formerly known as token booths)  or vending machines to buy their fare, which is currently stored in a MetroCard. Each station has at least one booth, typically located at the busiest entrance.  After swiping the card at a turnstile, customers enter the fare-controlled area of the station and continue to the platforms.  Inside fare control are "Off-Hours Waiting Areas", which consist of benches and are identified by a yellow sign.   
A typical subway station has waiting platforms ranging from 480 to 600 feet (150 to 180 m) long. Some are longer.   Platforms of former commuter rail stations—such as those on the IND Rockaway Line, are even longer. With the many different lines in the system, one platform often serves more than one service. Passengers need to look at the overhead signs to see which trains stop there and when, and at the arriving train to identify it. 
There are a number of common platform configurations. On a double track line, a station may have one center island platform used for trains in both directions, or two side platforms, one for each direction. For lines with three or four tracks with express service, local stops will have side platforms and the middle one or two tracks will not stop at the station. On these lines, express stations typically have two island platforms, one for each direction. Each island platform provides a cross-platform interchange between local and express services. Some lines with four-track express service have two tracks each on two levels and use both island and side platforms. 
Since the majority of the system was built before 1990, the year the Americans with Disabilities Act (ADA) went into effect, many New York City Subway stations were not designed to be handicapped-accessible.  Since then, elevators have been built in newly constructed stations to comply with the ADA. (Most grade-level stations required little modification to meet ADA standards.) In addition, the MTA identified "key stations", high-traffic and/or geographically important stations, which must conform to the ADA when they are extensively renovated. As of January 2017, there are 134 currently accessible stations; many of them have AutoGate access.   Under the current MTA plans, the number of ADA accessible stations will go up to 144 by 2020. 
In June 2016, the MTA was sued by a disability rights group for not including an elevator during the $21 million renovation of the Middletown Road station in the Bronx. Only 19% of all of the subway system's stations were fully accessible to people with disabilities at the time,  a number that rose to 24% the next year.  In April 2017, two simultaneous lawsuits against the MTA, one in state court and one in federal court, claimed that the system was breaking one of the city's human-rights laws by violating the Americans with Disabilities Act. As a result, the suits said, the MTA failed to "eliminate and prevent discrimination from playing any role in actions relating to employment, public accommodations and housing and other real estate." 
As of November 2016 [update], the New York City Subway has 6418 cars on the roster.  [note 10] A typical New York City Subway train consists of 8 to 11 cars, although shuttles can have as few as two, and the train can range from 150 to 600 feet (46 to 183 m) in length. 
The system maintains two separate fleets of cars, one for the A Division routes and another for the B Division routes.  All B Division equipment is about 10 feet (3.05 m) wide and either 60 feet 6 inches (18.44 m) or 75 feet (22.86 m) long, whereas A Division equipment is approximately 8 feet 9 inches (2.67 m) wide and 51 feet 4 inches (15.65 m) long.  A portion of the 60-foot B Division fleet is used for operation in the BMT Eastern Division, where 75-foot (22.86 m) long cars are not permitted.  
Cars purchased by the City of New York since the inception of the IND and the other divisions beginning in 1948 are identified by the letter "R" followed by a number; e.g.: R32.  This number is the contract number under which the cars were purchased.  Cars with nearby contract numbers (e.g.: R1 through R9, or R26 through R29, or R143 through R179) may be relatively identical, despite being purchased under different contracts and possibly built by different manufacturers. 
Since 1999, the R142, R142A, R143, R160, R179 and R188 cars have been placed into service.   These cars are collectively known as New Technology Trains (NTTs) due to modern innovations such as LED and LCD route signs and information screens, as well as recorded train announcements and the ability to facilitate Communication-Based Train Control (CBTC).  
As part of the 2017–2020 MTA Financial Plan, 600 subway cars will have electronic display signs installed to improve customer experience. 
Riders pay a single fare to enter the subway system and may transfer between trains at no extra cost until they exit via station turnstiles; the fare is a flat rate regardless of how far or how long the rider travels. Thus, riders must swipe their MetroCard or tap a contactless payment card or smartphone on an OMNY reader upon entering the subway system, but not a second time upon leaving. 
As of September 2020 [update], nearly all fares are paid by MetroCard or OMNY.  The base fare is $2.75 when purchased in the form of a reusable "pay per ride" MetroCard,  with the last fare increase occurring on March 22, 2015.  Single-use cards may be purchased for $3.00, and 7-day and 30-day unlimited ride cards can lower the effective per-ride fare significantly.  Reduced fares are available for the elderly and people with disabilities.   Fares paid with OMNY are identical to those paid with a pay-per-ride MetroCard; there are no options for single-ride or unlimited OMNY payments as of September 2020 [update]. 
Fares were stored in a money room at 370 Jay Street in Downtown Brooklyn starting in 1951, when the building opened as a headquarters for the New York City Board of Transportation.  The building is close to the lines of all three subway divisions (the IRT, BMT, and IND) and thus was a convenient location to collect fares, including tokens and cash, via money trains. Passageways from the subway stations, including a visible door in the Jay Street IND station, lead to a money sorting room in the basement of the building.   The money trains were replaced by armored trucks in 2006.   
In November 1993,  a fare system called the MetroCard was introduced, which allows riders to use magnetic stripe cards that store the value equal to the amount paid to a subway station booth clerk or vending machine.  The MetroCard was enhanced in 1997 to allow passengers to make free transfers between subways and buses within two hours; several MetroCard-only transfers between subway stations were added in 2001.   With the addition of unlimited-ride MetroCards in 1998, the New York City Transit system was the last major transit system in the United States with the exception of BART in San Francisco to introduce passes for unlimited bus and rapid transit travel.  Unlimited-ride MetroCards are available for 7-day and 30-day periods.  One-day "Fun Pass" and 14-day cards were also introduced, but have since been discontinued. 
On October 23, 2017, it was announced that the MetroCard would be phased out and replaced by OMNY, a contactless fare payment system by San Diego-based Cubic Transportation Systems, with fare payment being made using Apple Pay, Google Pay, debit/credit cards with near-field communication technology, or radio-frequency identification cards.   All buses and subway stations will be compatible with electronic fare collection by late 2020 or early 2021. Support of the MetroCard is intended to remain until 2023. 
Since the late 20th century, the MTA has started several projects to maintain and improve the subway. In the 1990s, it started converting the BMT Canarsie Line to use communications-based train control, utilizing a moving block signal system that allowed more trains to use the tracks and thus increasing passenger capacity.  After the Canarsie Line tests were successful, the MTA expanded the automation program in the 2000s and 2010s to include other lines.   As part of another program called FASTRACK, the MTA started closing sections of lines during weekday nights in 2012, in order to allow workers to clean these lines without being hindered by train movements.  It expanded the program beyond Manhattan the next year after noticing how efficient the FASTRACK program was compared to previous service diversions.  In 2015, the MTA announced a wide-ranging improvement program as part of the 2015–2019 Capital Program. Thirty stations would be extensively rebuilt under the Enhanced Station Initiative, and new R211 subway cars would be able to fit more passengers.  
The MTA has also started some projects to improve passenger amenities. It added train arrival "countdown clocks" to most A Division stations (except on the IRT Flushing Line, serving the 7 and <7> trains) and the BMT Canarsie Line ( L train) by late 2011, allowing passengers on these routes to see train arrival times using real-time data.  A similar countdown-clock project for the B Division and the Flushing Line was deferred  until 2016, when a new Bluetooth-based clock system was tested successfully.  Beginning in 2011, the MTA also started "Help Point" to aid with emergency calls or station agent assistance.  The Help Point project was deemed successful, and the MTA subsequently installed Help Points in all stations.  Interactive touchscreen "On The Go! Travel Station" kiosks, which give station advisories, itineraries, and timetables, were installed starting in 2011,  with the program also being expanded after a successful pilot.  Cellular phone and wireless data in stations, first installed in 2011 as part of yet another pilot program,  was also expanded systemwide due to positive passenger feedback.  Finally, credit-card trials at several subway stations in 2006 and 2010   led to proposals for contactless payment to replace the aging MetroCard. 
Signaling has evolved during a century of operation, and MTA uses a mixture of old and new systems. Most routes use block signaling but a few routes are also being retrofitted with communications-based train control (CBTC), which would allow trains to run without conductor input.  
The system currently uses automatic block signaling with fixed wayside signals and automatic train stops in order to provide safe train operation across the whole system.  The New York City Subway system has, for the most part, used block signalling since its first line opened, and many portions of the current signaling system were installed between the 1930s and 1960s. These signals work by preventing trains from entering a "block" occupied by another train. Typically, the blocks are 1,000 feet (300 m) long.  Red and green lights show whether a block is occupied or vacant. The train's maximum speed will depend on how many blocks are open in front of it. The signals do not register a train's speed, nor where in the block the train is located.  
Subway trains are stopped mechanically at all signals showing "stop". Although this is a simple principle of train stops, that wayside trippers must not be moved to trip ("stop") position until the train has fully passed.  
In the late 1990s and early 2000s, the MTA began automating the subway by installing CBTC, which supplements rather than replaces the fixed-block signal system; it allows trains to operate more closely together with lower headways. The BMT Canarsie Line, on which the L train runs, was chosen for pilot testing because it is a self-contained line that does not operate in conjunction with other lines. CBTC became operational in February 2009.  Due to an unexpected ridership increase, the MTA ordered additional cars, and increased service from 15 trains to 26 trains per hour, an achievement beyond the capability of the block system.  The total cost of the project was $340 million. 
After the success of the BMT Canarsie Line automation, the IRT Flushing Line, carrying the 7 and <7> trains, was next chosen to get CBTC.  The plan is estimated to cost US$1.4 billion.  It was scheduled to be completed in September 2017,  but was delayed to November 2018. :11–12
By 2018, CBTC was in the process of being installed on several other routes as well, particularly the IND Queens Boulevard Line ( E, F, <F>, M, and R trains) and IND Culver Line ( F, <F>, and G trains).  Eventually, the MTA has plans to automate a much larger portion, using One Person Train Operation (OPTO) in conjunction with CBTC. At the current pace of installation, it would take 175 years for CBTC to be installed at a cost of $20 billion.  The Flushing line operated at almost 30 trains an hour using the signal system installed when the line was built, but after CBTC is installed it is possible that an additional two trains per hour could be operated.  In March 2018, New York City Transit Authority president Andy Byford announced a new plan for resignaling the subway with CBTC, which would only take 10 to 15 years, compared to the previous estimate of 40 years. This would cost $8 to $15 billion.  
The New York City Subway uses a system known as Automatic Train Supervision (ATS) for dispatching and train routing on the A Division  (the Flushing line and the trains used on the 7 and <7> services do not have ATS.)  ATS allows dispatchers in the Operations Control Center (OCC) to see where trains are in real time, and whether each individual train is running early or late.  Dispatchers can hold trains for connections, re-route trains, or short-turn trains to provide better service when a disruption causes delays. 
Despite the signal system, there have been at least 64 major train accidents since 1918, when a train bound for South Ferry collided with two trains halted near Jackson Avenue on the IRT White Plains Road Line in the Bronx.  Several accidents resulted when the train operator ran through red signals and rear-ended the subway train in front of it; this resulted from the signaling practice of "keying by", which allowed train operators to bypass red signals. The deadliest accident, the Malbone Street Wreck, occurred on November 1, 1918 beneath the intersection of Flatbush Avenue, Ocean Avenue, and Malbone Street (the latter of which is now Empire Boulevard) near the Prospect Park station of the then-BRT Brighton Line in Brooklyn, killing 93 people.  As a result of accidents, especially more recent ones such as the 1995 Williamsburg Bridge crash, timer signals were installed. These signals have resulted in reduced speeds across the system. Accidents such as derailments are also due to broken equipment, such as the rails and the train itself. 
A portion of subway-related deaths in New York consists of suicides committed by jumping in front of an oncoming train. Between 1990 and 2003, 343 subway-related suicides were registered out of a citywide total of 7,394 (4.6%) and subway-related suicides increased by 30%, despite a decline in overall suicide numbers. 
Due to increase in people hit by trains in 2013,  in late 2013 and early 2014 the MTA started a test program at one undisclosed station, with four systems and strategies to eliminate the number of people hit by trains. Closed-circuit television cameras, a web of laser beams stretched across the tracks, radio frequencies transmitted across the tracks, and thermal imaging cameras focused on the station's tracks were set to be installed at that station.  At the undisclosed station, tests have gone so well that these track protection systems will be installed system-wide as part of the 2015–2019 capital program. 
The MTA also expressed interest in starting a pilot program to install platform edge doors.  Several planned stations in the New York City Subway may possibly feature platform screen doors, including at future stations such as those part of the Second Avenue Subway.  Currently, the MTA is planning a test program to install screen doors at a subway station on the BMT Canarsie Line. As part of the 2010–2014 capital program, the station was going to be Sixth Avenue, but it is uncertain if this will be the chosen station.  Following a series of incidents during a week in November 2016, in which three people were injured or killed after being pushed onto the tracks, the MTA started to consider installing platform edge doors for the 42nd Street Shuttle.  Numerous challenges come with platform doors. Some subway lines operate multiple subway car models, and their doors do not line up.  Many platforms are not strong enough to hold the additional weight of a platform barrier, thus requiring extensive renovations if they were to be installed. 
Crime rates have varied, but a downward trend has been observed starting in the 1990s up until 2014.  In order to fight crime, various approaches have been used over the years, including an "If You See Something, Say Something" campaign  and, starting in 2016, banning people who commit a crime in the subway system from entering the system for a certain length of time. 
To counter these developments, a policy that was rooted in the late 1980s and early 1990s was implemented.   In line with this Fixing Broken Windows philosophy, the New York City Transit Authority (NYCTA) began a five-year program to eradicate graffiti from subway trains in 1984.  In 1993, Mayor Rudy Giuliani took office and with Police Commissioner Howard Safir, the strategy was more widely deployed in New York. Crime rates in the subway and the city dropped to an extent during this time and Giuliani's campaign credited this success to his policy.   The extent to which his policies deserve the credit is disputed.  New York City Police Department Commissioner, William J. Bratton and the author of Fixing Broken Windows, George L. Kelling have stated that the police played an "important, even central, role" in the declining crime rates. 
The trend continued and Giuliani's successor, Michael Bloomberg, stated in a November 2004 press release: "Today, the subway system is safer than it has been at any time since we started tabulating subway crime statistics nearly 40 years ago." 
After the September 11, 2001, attacks, the MTA exercised extreme caution regarding anyone taking photographs or recording video inside the system and proposed banning all photography and recording in a meeting around June 2004.  Due to strong response from both the public and from civil rights groups, the rule of conduct was dropped. In November 2004, the MTA again put this rule up for approval, but was again denied,  though many police officers and transit workers still confront or harass people taking photographs or videos.  On April 3, 2009, the NYPD issued a directive to officers stating that it is legal to take pictures within the subway system so long as it is not accompanied with suspicious activity. 
Currently, the MTA Rules of Conduct, Restricted Areas and Activities section states that anyone may take pictures or record videos, provided that they do not use any of three tools: lights, reflectors, or tripods. These three tools are permitted only by members of the press who have identification issued by the NYPD. 
On July 22, 2005, in response to bombings in London, the New York City Transit Police introduced a new policy of randomly searching passengers' bags as they approached turnstiles. The NYPD claimed that no form of racial profiling would be conducted when these searches actually took place. The NYPD has come under fire from some groups that claim purely random searches without any form of threat assessment would be ineffectual. Donna Lieberman, Executive Director of the NYCLU, stated, "This NYPD bag search policy is unprecedented, unlawful and ineffective. It is essential that police be aggressive in maintaining security in public transportation. But our very real concerns about terrorism do not justify the NYPD subjecting millions of innocent people to suspicionless searches in a way that does not identify any person seeking to engage in terrorist activity and is unlikely to have any meaningful deterrent effect on terrorist activity."  The searches were upheld by the United States Court of Appeals for the Second Circuit in MacWade v. Kelly. 
On April 11, 2008, MTA received a Ferrara Fire Apparatus Hazardous Materials Response Truck, which went into service three days later. It will be used in the case of a chemical or bioterrorist attack. 
The MTA faced a budget deficit of US$1.2 billion in 2009.  This resulted in fare increases (three times from 2008 to 2010)  and service reductions (including the elimination of two part-time subway services, the V and W). Several other routes were modified as a result of the deficit. The N was made a full-time local in Manhattan (in contrast to being a weekend local/weekday express before 2010), while the Q was extended nine stations north to Astoria–Ditmars Boulevard on weekdays, both to cover the discontinued W. The M was combined with the V, routing it over the Chrystie Street Connection, IND Sixth Avenue Line and IND Queens Boulevard Line to Forest Hills–71st Avenue on weekdays instead of via the BMT Fourth Avenue Line and BMT West End Line to Bay Parkway. The G was truncated to Court Square full-time. Construction headways on eleven routes were lengthened, and off-peak service on seven routes were lengthened. 
In June 2017, Governor Andrew Cuomo signed an executive order declaring a state of emergency for the New York City Subway  after a series of derailments,   track fires,   and overcrowding incidents.   On June 27, 2017, thirty-nine people were injured when an A train derailed at 125th Street,   damaging tracks and signals  then catching on fire.   On July 21, 2017, the second set of wheels on a southbound Q train jumped the track near Brighton Beach, with nine people suffering injuries  due to improper maintenance of the car in question.   To solve the system's problems, the MTA officially announced the Genius Transit Challenge on June 28, where contestants could submit ideas to improve signals, communications infrastructure, or rolling stock.  
On July 25, 2017, Chairman Joe Lhota announced a two-phase, $9 billion New York City Subway Action Plan to stabilize the subway system and to prevent the continuing decline of the system.     The first phase, costing $836 million, consisted of five categories of improvements in Signal and Track Maintenance, Car Reliability, System Safety and Cleanliness, Customer Communication, and Critical Management Group. The $8 billion second phase would implement the winning proposals from the Genius Transit Challenge and fix more widespread problems.    Six winning submissions for the Genius Transit Challenge were announced in March 2018. 
In October 2017, city comptroller Scott Stringer released an analysis that subway delays could cost up to $389 million or $243.1 million or $170.2 million per year depending on the length of the delays. 
In November 2017, The New York Times published its investigation into the crisis. It found that the crisis had arisen as a result of financially unsound decisions by local and state politicians from both the Democratic and Republican parties. According to the Times, these decisions included overspending; overpaying unions and interest groups; advertising superficial improvement projects while ignoring more important infrastructure; and agreeing to high-interest loans that would have been unnecessary without these politicians' other interventions. By this time, the subway's 65% average on-time performance was the lowest among all major cities' transit systems, and every non-shuttle subway route's on-time performance had declined in the previous ten years. 
Several subway lines have reached their operational limits in terms of train frequency and passengers, according to data released by the Transit Authority. As of June 2007 [update], all of the A Division services except the 42nd Street Shuttle, as well as the E and L trains, were beyond capacity, as well as portions of the N train.   In April 2013, New York magazine reported that the system was more crowded than it had been in the previous 66 years.  The subway reached a daily ridership of 6 million for 29 days in 2014, and was expected to record a similar ridership level for 55 days in 2015; by comparison, in 2013, daily ridership never reached 6 million.  In particular, the express tracks of the IRT Lexington Avenue Line and IND Queens Boulevard Line are noted for operating at full capacity during peak hours.   The Long Island Rail Road East Side Access project is expected to bring many more commuters to the Lexington Avenue Line when it opens around the year 2022, further overwhelming its capacity.   
By early 2016, delays as a result of overcrowding were up to more than 20,000 every month, four times the amount in 2012. The overcrowded trains have resulted in an increase of assaults because of tense commuters. With less platform space, more passengers are forced to be on the edge of the platform resulting in the increased possibility of passengers falling on the track. The MTA is considering platform screen doors, which exist on the AirTrain JFK to prevent passengers falling onto the tracks. In order to prevent hitting passengers who could fall onto the tracks, train operators are being instructed to go into stations at lower speeds. The increased proximity of riders could result in the spread of contagious diseases. 
The Second Avenue Subway, which has provisions for communications-based train control (CBTC), was built to relieve pressure on the Lexington Avenue Line ( 4, 5, 6, and <6> trains) by shifting an estimated 225,000 passengers.  In addition, CBTC installation on the Flushing Line is expected to increase the rate of trains per hour on the 7 and <7> trains, but little relief will come to other crowded lines until later. CBTC on the Flushing Line is expected to be completed in September 2017.  The L train, which is overcrowded during rush hours, already has CBTC operation.  The installation of CBTC has reduced the L's running time by 3%.  Even with CBTC, there are limits on the potential increased service. For L service to be increased further, a power upgrade as well as additional space for the L to turn around at its Manhattan terminus, Eighth Avenue, are needed. 
The MTA is also seeking to implement CBTC on the IND Queens Boulevard Line. CBTC is to be installed on this line in five phases, with phase one ( 50th Street/8th Avenue and 47th–50th Streets–Rockefeller Center to Kew Gardens–Union Turnpike) being included in the 2010–2014 capital budget. The $205.8 million contract for the installment of phase one was awarded in 2015 to Siemens and Thales. Planning for phase one started in 2015, with major engineering work to follow in 2017.   The total cost for the entire Queens Boulevard Line is estimated at over $900 million.  The Queens Boulevard CBTC project is expected to be completed in 2021.  Funding for CBTC on the IND Eighth Avenue Line is also provided in the 2015–2019 capital project.  The MTA projects that 355 miles of track will receive CBTC signals by 2029, including most of the IND, as well as the IRT Lexington Avenue Line and the BMT Broadway Line.  The MTA also is planning to install CBTC equipment on the IND Crosstown Line, the BMT Fourth Avenue Line and the BMT Brighton Line before 2025.  As part of the installation of CBTC, the whole fleet of subway cars needs to be remodeled or replaced. 
Due to an increase of ridership, the MTA has tried to increase capacity wherever possible by adding more frequent service, specifically during the evening hours. This increase will not likely keep up with the growth of subway ridership.    Some lines have capacity for additional trains during peak times, but there are too few subway cars for this additional service to be operated. 
As part of the R211 subway car order, the MTA is planning to test a train of 10 open-gangway experimental prototype cars, which could increase capacity by up to 10% by utilizing space between cars. The order could be expanded to include up to 750 open-gangway cars.   
The MTA is also testing smaller ideas on some services. Starting in late 2015, 100 "station platform controllers" were deployed for the F, 6, and 7 trains, to manage the flow of passengers on and off crowded trains during morning rush hours. There were a total of 129 such employees, who also answer passengers' questions about subway directions, rather than having conductors answer them and thus delaying the trains.     In early 2017, the test was expanded to the afternoon peak period with an increase of 35 platform conductors.   In November of the same year, 140 platform controllers and 90 conductors gained iPhone 6S devices so they could receive notifications of, and tell riders about, subway disruptions.  Subway guards, the predecessors to the platform controllers, were first used during the Great Depression and World War II. 
Shortened "next stop" announcements on trains were being tested on the 2 and 5 trains. "Step aside" signs on the platforms, reminding boarding passengers to let departing passengers off the train first, are being tested at Grand Central–42nd Street, 51st Street, and 86th Street on the Lexington Avenue Line.   Cameras would also be installed so the MTA could observe passenger overcrowding.    
In systems like the London Underground, stations are simply closed off when they are overcrowded, such as the busy Oxford Circus tube station, which had to close more than 100 times in a year. That type of restriction is not necessary yet on the New York City Subway, according to MTA spokesman Kevin Ortiz. 
Service on the subway system is occasionally disrupted by flooding from rainstorms, even minor ones.  Rainwater can disrupt signals underground and require the electrified third rail to be shut off. Every day, the MTA moves 13 million gallons of water when it is not raining.  Since 1992, $357 million has been used to improve 269 pump rooms. By August 2007, $115 million was earmarked to upgrade the remaining 18 pump rooms. 
Despite these improvements, the transit system continues to experience flooding problems. On August 8, 2007, after more than 3 inches (76 mm) of rain fell within an hour, the subway system flooded, causing almost every subway service to either be disabled or seriously disrupted, effectively halting the morning rush.   This was the third incident in 2007 in which rain disrupted service. The system was disrupted on this occasion because the pumps and drainage system can handle only a rainfall rate of 1.75 inches (44 mm) per hour; the incident's severity was aggravated by the scant warning as to the severity of the storm.  :10
In addition, as part of a $130 million and an estimated 18-month project, the MTA began installing new subway grates in September 2008 in an attempt to prevent rain from overflowing into the subway system. The metallic structures, designed with the help of architectural firms and meant as a piece of public art, are placed atop existing grates but with a 3-to-4-inch (76 to 102 mm) sleeve to prevent debris and rain from flooding the subway. The racks will at first be installed in the three most flood-prone areas as determined by hydrologists: Jamaica, Tribeca, and the Upper West Side. Each neighborhood has its own distinct design, some featuring a wave-like deck which increases in height and features seating (as in Jamaica), others with a flatter deck that includes seating and a bike rack.   
In October 2012, Hurricane Sandy caused significant damage to New York City, and many subway tunnels were inundated with floodwater. The subway opened with limited service two days after the storm and was running at 80 percent capacity within five days; some infrastructure needed years to repair. A year after the storm, MTA spokesperson Kevin Ortiz said, "This was unprecedented in terms of the amount of damage that we were seeing throughout the system."   The storm flooded nine of the system's 14 underwater tunnels, many subway lines, and several subway yards, as well as completely destroying a portion of the IND Rockaway Line and much of the South Ferry terminal station. Reconstruction required many weekend closures on several lines as well as the 53rd Street Tunnel, Clark Street Tunnel, Cranberry Street Tunnel, Joralemon Street Tunnel and Steinway Tunnel; several long-term closures were also included on the Greenpoint Tunnel, Montague Street Tunnel, Rockaway Line, and the South Ferry station, with a partial closure planned for the 14th Street Tunnel; some reconstruction is expected to last until at least 2020. 
Flooding at 125th Street after a water main break
South Ferry after Hurricane Sandy
Pump train in the Cranberry Street Tube after Hurricane Sandy
Before 2011 there have been some full subway closures for transit strikes ( January 1–13, 1966,  April 1–11, 1980,  December 20–22, 2005)  and blackouts ( November 9–10, 1965,  July 13–14, 1977,  August 14–16, 2003 ).
On August 27, 2011, due to the approach of Hurricane Irene, the MTA suspended subway service at noon in anticipation of heavy flooding on tracks and in tunnels. It was the first weather-caused shutdown in the history of the system.  Service was restored by August 29.  
On October 29, 2012, another full closure was ordered before the arrival of Hurricane Sandy.  All services on the subway, the Long Island Rail Road and Metro-North were gradually shut down that day at 7:00 P.M., to protect passengers, employees and equipment from the coming storm.  The storm caused serious damage to the system, especially the IND Rockaway Line, upon which many sections between Howard Beach–JFK Airport and Hammels Wye on the Rockaway Peninsula were heavily damaged, leaving it essentially isolated from the rest of the system.   This required the NYCTA to truck in 20 R32 subway cars to the line to provide some interim service (temporarily designated the H).    Also, several of the system's tunnels under the East River were flooded by the storm surge.  South Ferry suffered serious water damage and did not reopen until April 4, 2013 by restoring service to the older loop-configured station that had been replaced in 2009;   the stub-end terminal tracks remained out of service until June 2017.    
Since 2015, there have been three blizzard-related subway shutdowns. On January 26, 2015, another full closure was ordered by New York Governor Andrew Cuomo due to the January 2015 nor'easter, which was originally projected to leave New York City with 20 to 30 inches (51 to 76 cm) of snow.  The next day, the subway system was partially reopened.   A number of New York City residents criticized Cuomo's decision to shut down the subway system for the first time ever due to snow. The nor'easter dropped much less snow in the city than originally expected, totaling only 9.8 inches (25 cm) in Central Park.   On January 23, 2016, a partial subway closure was ordered due to the January 2016 United States blizzard, wherein all above-ground stations were closed; the underground lines remained open during the blizzard.   Most of the subway resumed service the next day, with some lingering delays due to an average of 26 inches (66 cm) of snow in the area.  On March 13, 2017, another partial subway closure of all above-ground stations was ordered for the next day due to the March 2017 nor'easter, which was forecast to bring up to 20 inches (51 cm) of snow to the area. 
Starting on May 6, 2020, as a result of the COVID-19 pandemic in New York City, stations were closed between 1:00 a.m. and 5:00 a.m. for cleaning and disinfecting; the overnight closures will be a temporary measure that will end once the pandemic is over.   Over 500 trains continue to run between 1 a.m. and 5 a.m. every 20 minutes, carrying only transit workers and emergency personnel. The trains keep running because there is not enough space in the system to store all trains simultaneously, and so that they can easily resume service upon the start of rush hour at 5 a.m.  On August 4, 2020, service at above-ground stations was suspended due to the high wind gusts brought by Tropical Storm Isaias. 
Litter accumulation in the subway system is perennial. In the 1970s and 1980s, dirty trains and platforms, as well as graffiti, were a serious problem. The situation had improved since then, but the 2010 budget crisis, which caused over 100 of the cleaning staff to lose their jobs, threatened to curtail trash removal.   Every day, the MTA removes 40 tons of trash from 3,500 trash receptacles. 
The New York City Subway system is infested with rats.  Rats are sometimes seen on platforms,  and are commonly seen foraging through garbage thrown onto the tracks. They are believed to pose a health hazard, and on rare instances have been known to bite humans.  Subway stations notorious for rat infestation include Chambers Street, Jay Street–MetroTech, West Fourth Street, Spring Street and 145th Street. 
Decades of efforts to eradicate or simply thin the rat population in the system have been unsuccessful. In March 2009, the Transit Authority announced a series of changes to its vermin control strategy, including new poison formulas and experimental trap designs.  In October 2011, they announced a new initiative to clean 25 subway stations, along with their garbage rooms, of rat infestations.  That same month, the MTA announced a pilot program aimed at reducing levels of garbage in the subways by removing all garbage bins from the subway platforms. The initiative was tested at the Eighth Street–New York University and Flushing–Main Street stations.  As of March 2016, stations along the BMT Jamaica Line, BMT Myrtle Avenue Line, and various other stations had their garbage cans removed due to the success of the program.  In March 2017 the program was ended as a failure. 
The old vacuum trains that are designed to remove trash from the tracks are ineffective and often broken.  A 2016 study by Travel Math had the New York City Subway listed as the dirtiest subway system in the country based on the number of viable bacteria cells.  In August 2016, the MTA announced that it had initiated Operation Track Sweep, an aggressive plan to dramatically reduce the amount of trash on the tracks and in the subway environment. This was expected to reduce track fires and train delays. As part of the plan, the frequency of station track cleaning would be increased, and 94 stations would be cleaned per two-week period, an increase from the previous rate of 34 stations every two weeks.  The MTA launched an intensive two-week, system-wide cleaning on September 12, 2016.  Three new powerful vacuum trains were later ordered; one arrived in 2018, and the others are expected in 2019.  The operation will also include 27 new refuse cars 
On March 28, 2017, the New York State Comptroller, Thomas DiNapoli, announced the MTA's pilot program to remove trash cans had been scrapped. His office had criticized the agency for the program. 
Rolling stock on the New York City Subway produces high levels of noise that exceed guidelines set by the World Health Organization and the U.S. Environmental Protection Agency.  In 2006, Columbia University's Mailman School of Public Health found noise levels averaged 95 decibel (dB) inside subway cars and 94 dB on platforms.  Daily exposure to noise at such levels for as little as 30 minutes can lead to hearing loss.  Noise on one in 10 platforms exceeded 100 dB.  Under WHO and EPA guidelines, noise exposure at that level is limited to 1.5 minutes.  A subsequent study by Columbia and the University of Washington found higher average noise levels in the subway (80.4 dB) than on commuter trains including Port Authority Trans-Hudson (PATH) (79.4 dB), Metro-North (75.1 dB) and Long Island Rail Road (LIRR) (74.9 dB).  Since the decibel scale is a logarithmic scale, sound at 95 dB is 10 times more intense than at 85 dB, 100 times more intense than at 75 dB, and so forth.  In the second study, peak subway noise registered at 102.1 dB. 
For the construction of the Second Avenue Subway, the MTA, with the engineering firm Arup, worked to reduce the noise levels in stations. In order to reduce noise for all future stations starting with the Second Avenue Subway, the MTA is investing in low-vibration track using ties encased in concrete-covered rubber and neoprene pads. Continuously welded rail, which is also being installed, reduces the noise being made by the wheels of trains. The biggest change that is going to be made is in the design of stations. Current stations were built with tile and stone, which bounce sound everywhere, while newer stations will have the ceilings lined with absorbent fiberglass or mineral wool that will direct sound toward the train and not the platform. With less noise from the trains, platform announcements could be heard more clearly. They will be clearer with speakers spaced periodically on the platform, angled so that announcements can be heard by the riders. The Second Avenue Subway has the first stations to test this technology. 
The subway is a popular venue for busking. A permit is not required to perform, but certain codes of conduct are required.  Some buskers are affiliated with Music Under New York (MUNY), a part of the Arts & Design program by the MTA. Since 1987, MTA has sponsored the MUNY program  in which street musicians enter a competitive contest to be assigned to the preferred high traffic locations. Each year, applications are reviewed and approximately 70 eligible performers are selected and contacted to participate in live auditions held for one day.    
From 1941 to 1976, the Board of Transportation/ New York City Transit Authority sponsored the "Miss Subways" publicity campaign.  In the musical On the Town, the character Miss Turnstiles is based on the Miss Subways campaign.   The campaign was resurrected in 2004, for one year, as "Ms. Subways". It was part of the 100th anniversary celebrations. The monthly campaign, which included the winners' photos and biographical blurbs on placards in subway cards, featured such winners as Mona Freeman and prominent New York City restaurateur Ellen Goodman. The winner of this contest was Caroline Sanchez-Bernat, an actress from Morningside Heights. 
Subway Series is a term applied to any series of baseball games between New York City teams, as opposing teams can travel to compete merely by using the subway system. Subway Series is a term long used in New York, going back to series between the Brooklyn Dodgers or New York Giants and the New York Yankees in the 1940s and 1950s. Today, the term is used to describe the rivalry between the Yankees and the New York Mets. During the 2000 World Series, cars on the 4 train (which stopped at Yankee Stadium) were painted with Yankee colors, while cars on the 7 train (which stopped at Shea Stadium) had Mets colors.  The term could also be applied to the rivalry between the New York Knicks and the Brooklyn Nets of the National Basketball Association, or the New York Rangers and the New York Islanders of the National Hockey League ever since the Nets and the Islanders moved to the Barclays Center in Brooklyn.  
Since 2003, the MTA has operated a Holiday Nostalgia Train on Sundays in November and December, from the first Sunday after Thanksgiving to the Sunday before Christmas Day.  This train is made of vintage cars from the R1 through R9 series, which have been preserved by Railway Preservation Corp. and the New York Transit Museum. The route made all stops between Second Avenue in Manhattan and Queens Plaza in Queens via the IND Sixth Avenue Line and the IND Queens Boulevard Line. In 2011, the train operated on Saturdays instead of Sundays.  In 2017, the train ran between Second Avenue and 96th Street. 
The contract, car numbers (and year built) used were Arnines, specifically R1 100 (built 1930), R1 103 (1930), R1 381 (1931), R4 401 (1932), R4 484 (1932) – Bulls Eye lighting and a test P.A. system added in 1946, R6-3 1000 (1935), R6-1 1300 (1937), R7A 1575 (1938) – rebuilt in 1947 as a prototype for the R10 subway car, and R9 1802 (1940). 
Since 2008, the MTA has tested full train wraps on 42nd Street Shuttle rolling stock. In full train wraps, advertising entirely covers the interiors and exteriors of the train, as opposed to other routes, whose stock generally only displays advertising on placards inside the train.   While most advertisements are well received, a few advertisements have been controversial. Among the more contentious wraps that were withdrawn are a 2015 ad for the TV show The Man in the High Castle, which featured a Nazi flag,   and an ad for Fox Sports 1, in which a shuttle train and half of its seats were plastered with negative quotes about the New York Knicks, one of the city's NBA teams.  
Other routes have seen limited implementation of full train wraps. For instance, in 2010, one R142A train set on the 6 route was wrapped with a Target advertisement.  In 2014, the Jaguar F-Type was advertised on train sets running on the F route.   Some of these wraps have also been controversial, such as a Lane Bryant wrap in 2015 that displayed lingerie models on the exteriors of train cars. 
The New York City Subway system commemorates Pride Month in June with Pride-themed posters.  The MTA celebrated Stonewall 50 - WorldPride NYC 2019 in June 2019 with rainbow-themed Pride logos on the subway trains as well as Pride-themed MetroCards. 
- These are the physical tracks that a train "service" runs on. See New York City Subway nomenclature for more information.
- These "services" run on physical tracks. See New York City Subway nomenclature for more information.
- There are 13 stations on the IND Second Avenue Line and 1 station on the IRT Flushing Line planned.
- Permanently closed stations are not counted. 
- Both the Chambers Street–World Trade Center (IND Eighth Avenue Line) and Canal Street (BMT Broadway Line) stations are considered two stations each by the MTA.  If both of them are counted as one station each, the number of stations in the New York City Subway is 470 stations (or 424 by international standards).
- The IRT main line, which is considered to be the first New York City "subway" line, opened in 1904; the Ninth Avenue Line, a predecessor elevated railroad line, operated its first trial run on July 3, 1868 according to Facts and Figures 1979–80, published by the New York City Transit Authority See also nycsubway.org; and the West End Line, which opened in 1863. A small portion of the latter line's original right-of-way, part of an extension opened in 1864, is still in daily use near Coney Island. thethirdrail.net Archived May 23, 2006, at the Wayback Machine
- Highest daily ridership since public takeover. In the first half of the 20th century, ridership was significantly higher.
- There is one station ( 10th Avenue) planned as a future infill station. See Outcry emerges for 41st St. stop on new 7-line
- See also FASTRACK
- The Times Square and Grand Central stations of the IRT 42nd Street Shuttle are closed during late nights.
- "Introduction to Subway Ridership". Metropolitan Transportation Authority. Retrieved July 12, 2018.
- "web.mta.info/capital/sas_docs/final_summary_report.pdf" (PDF).
- "MTA releases Second Avenue subway images".
- "Outcry emerges for 41st St. stop on new 7-line".
- "Station Developers' Information". Metropolitan Transportation Authority. Retrieved June 13, 2017.
- Fifty Years of Rapid Transit (1918)
- "The MTA Network". Metropolitan Transportation Authority. Retrieved February 22, 2018.
- "1 Subway Line Profile" (PDF). NYPRIG Straphangers Campaign. Retrieved February 28, 2016.
- "Comprehensive Annual Financial Report for the Years Ended December 31, 2018 and 2017" (PDF). Metropolitan Transportation Authority (MTA). June 26, 2019. p. 156. Retrieved January 15, 2021.
- "Facts & Figures – Subways". www.nycsubway.org. Retrieved March 9, 2014.
- "The Railway Power Stations of New York City". Engineering and Technology History. Retrieved September 13, 2016.
- "Average schedule speed: How does Metro compare?".
- Hood, Clifton (2004). 722 Miles: The Building of the Subways and How They Transformed New York. Johns Hopkins University Press. ISBN 978-0801880544.
- "Metropolitan Transportation Authority Description and Board Structure Covering Fiscal Year 2009" (PDF). mta.info. Metropolitan Transportation Authority. 2009. Retrieved March 13, 2016.
- "What is the largest metro system in the world?". CityMetric. Retrieved March 13, 2016.
- "How to Ride the Subway". Retrieved November 17, 2013.
- "Subways". Metropolitan Transportation Authority (MTA). April 2, 2013. Retrieved April 26, 2015.
- Emma G. Fitzsimmons (November 16, 2014). "M.T.A. Expected to Raise Fares and Tolls". The New York Times. Retrieved November 18, 2014.
- Goldstein, Jack (2013). 101 Amazing Facts About New York. Andrews UK Limited. ISBN 978-1783333059.
- Rivoli, Dan (February 13, 2018). "MTA Budget: Where does the money go?". NY Daily News. Retrieved November 3, 2018.
- Meyer, David (January 20, 2020). "Subways had best on-time performance in six years during 2019". New York Post. Retrieved December 2, 2020.
- Brennan, Joseph (2005). "They found the tube in excellent condition". Beach Pneumatic. Archived from the original on October 6, 2007. Retrieved January 17, 2008.
- "Inventor of the Week: Archive". March 6, 2014. Archived from the original on March 6, 2014. Retrieved March 18, 2016.
- "The Pneumatic Tunnel Under Broadway (1870)". nycsubway.org. Archived from the original on May 5, 2008. Retrieved July 7, 2008. (extract from Scientific American March 5, 1870)
- nycsubway.org – Beach Pneumatic Transit
- Blankinger, Kari (March 1, 2016). "NYC's first subway was luxurious, pneumatic and built illegally". New York Daily News. Retrieved March 13, 2016.
- Martin, Douglas (November 17, 1996). "Subway Planners' Lofty Ambitions Are Buried as Dead-End Curiosities". nytimes.com. The New York Times. Retrieved June 27, 2015.
- Santora, Marc (August 14, 2013). "When the New York City Subway Ran Without Rails". The New York Times.
- Christiano, G. J. "The Blizzard of 1888; the Impact of this Devastating Storm on New York Transit". nycsubway.org. Retrieved February 9, 2016.
- "American Experience. Technology . New York Underground. About the Program | PBS". www.pbs.org. Retrieved March 13, 2016.
- "Done at Last". Brooklyn Daily Eagle. Brooklyn, NY. May 13, 1885. p. 1.
- "Halsey Street Station Opened". Brooklyn Daily Eagle. Brooklyn, NY. August 19, 1885. p. 4.
- "A New Station Opened". Brooklyn Daily Eagle. Brooklyn, NY. July 18, 1885. p. 4.
- "East New York". Brooklyn Daily Eagle. Brooklyn, NY. June 13, 1885. p. 6.
- "Still Extending Its Lines". Brooklyn Daily Eagle. Brooklyn, NY. September 5, 1885. p. 6.
- "www.nycsubway.org: BMT Nassau Street-Jamaica Line". www.nycsubway.org. Retrieved February 25, 2016.
- "Opening of a New Railroad". Brooklyn Daily Eagle. Brooklyn, NY. October 5, 1863. p. 2.
- "Railroads". Brooklyn Daily Eagle. Brooklyn, NY. October 9, 1863. p. 1.
- "The Third Rail – Gunther and his Railroad – page 1". www.thethirdrail.net. Archived from the original on February 29, 2016. Retrieved February 14, 2016.
- "New York City subway opens – Oct 27, 1904". history.com. October 27, 1904. Retrieved October 25, 2015.
- James Blaine Walker, Fifty Years of Rapid Transit, 1864–1917, published 1918, pp. 162–191
- "The 9th Avenue Elevated-Polo Grounds Shuttle". nycsubway.org. 2012. Retrieved July 3, 2014.
- "Our Subway Open, 150,000 Try It – Mayor McClellan Runs the First Official Train" (PDF). The New York Times. October 28, 1904. Retrieved February 24, 2016.
- "Specter of the 5¢ fare haunts the current fare hike debate". Second Ave. Sagas. November 21, 2007. Retrieved February 25, 2016.
- "www.nycsubway.org: New Subways for New York: The Dual System of Rapid Transit (1913)". www.nycsubway.org. Retrieved February 26, 2016.
- "Gay Midnight Crowd Rides First Trains in New Subway". The New York Times. September 10, 1932. p. 1.
- Feinman, Mark S. (2000). "History of the Independent Subway". nycsubway.org. Retrieved February 10, 2016.
- Cudahy, Brian J. (1995). Under the Sidewalks of New York: The Story of the Greatest Subway System in the World. Fordham University Press. p. 118. ISBN 978-0823216185.
- "Straphangers Sit As Tunnel Opens". The New York Times. December 2, 1955. p. 29. Retrieved February 13, 2010.
- Perlmutter, Emanuel (November 16, 1967). "Subway Changes to Speed Service: Major Alterations in Maps, Routes and Signs Will Take Effect Nov. 26" (PDF). nytimes.com. The New York Times. Retrieved July 7, 2015.
- Raskin, Joseph B. (2013). The Routes Not Taken: A Trip Through New York City's Unbuilt Subway System. New York, New York: Fordham University Press. doi: 10.5422/fordham/9780823253692.001.0001. ISBN 978-0-82325-369-2.
- "A Division". August 6, 2011. Archived from the original on August 6, 2011. Retrieved February 14, 2016.
- Sparberg, Andrew J. (2014). From a Nickel to a Token: The Journey from Board of Transportation to MTA. Fordham University Press. ISBN 978-0823261901.
- Cunningham, Joseph; DeHart, Leonard O. (1993). A History of the New York City Subway System. J. Schmidt, R. Giglio, and K. Lang.
- "mta.info | Facts and Figures". web.mta.info. Retrieved March 11, 2016.
- "Transport Workers Union Our History". www.twu.org. Archived from the original on February 9, 2016. Retrieved February 16, 2016.
- B. Freeman, Joshua (1989). In Transit:The Transport Workers Union In New York City, 1933–1966. Temple University Press. ISBN 978-1592138159.
- "A Short History of Recent American Transit Strikes". The Transport Politic. August 14, 2009. Retrieved February 16, 2016.
- "A look back at the historic 1966 transit strike: Photos and more". am New York. Retrieved February 16, 2016.
- "N. Y. Transit Strike on (January 1, 1966)". Retrieved February 16, 2016.
- "35 Years Ago This Week, the MTA Strikes for 11 Days in NYC Bringing Transit to a Halt". Untapped Cities. April 7, 2015. Archived from the original on February 20, 2016. Retrieved February 16, 2016.
- Steinhauer, Jennifer (December 21, 2005). "Citywide Strike Halts New York Subways and Buses". The New York Times. ISSN 0362-4331. Retrieved February 16, 2016.
- "NYC Transit Workers On Strike". www.cbsnews.com. Retrieved February 16, 2016.
- nycsubway.org – The New York Transit Authority in the 1970s
- nycsubway.org – The New York Transit Authority in the 1980s
- Lorch, Donatella (October 29, 1989). "The 'Subway to Nowhere' Now Goes Somewhere". The New York Times. Retrieved October 20, 2011.
- Johnson, Kirk (December 9, 1988). "Big Changes For Subways Are to Begin". The New York Times. Retrieved July 5, 2009.
- Lentz, Phillip (May 18, 1989). "Graffiti Cleanup A Shiny Symbol Of Subway System's Turnaround". Chicago Tribune. Retrieved March 11, 2016.
- U.S. Department of Transportation Research and Special Programs Administration, Volpe National Transportation Systems Center (April 2002). "Effects of Catastrophic Events on Transportation System Management and Operations: New York City – September 11". Retrieved November 5, 2013.
- Kennedy, Randy. "Tunnel Vision; With Station's Reopening, Even Commuters Smile", The New York Times, September 17, 2002. Accessed October 6, 2007.
- "1 9 2 3 Service Restored" (PDF). mta.info. September 15, 2002. Archived from the original (PDF) on July 16, 2003. Retrieved December 25, 2017.
- "September 11: Three Years Later". Brian Abbott. September 11, 2004. Retrieved March 25, 2016.
- Fitzsimmons, Emma G.; Hu, Winnie (September 8, 2018). "Cortlandt Street Station, Damaged on Sept. 11, Reopens 17 Years Later". The New York Times. Retrieved September 8, 2018.
- "WTC Cortlandt Subway Station Reopens for 1st Time Since 9/11 Attacks". NBC 4 New York. Associated Press. September 8, 2018. Retrieved September 8, 2018.
- "mta.info: Superstorm Sandy Timeline".
- "www.nycsubway.org: The New York Subway: Chapter 02, Types and Methods of Construction". www.nycsubway.org. Retrieved November 1, 2015.
- "Why It Was Faster To Build Subways in 1900". Atlas Obscura. October 22, 2015. Retrieved April 15, 2016.
- "www.nycsubway.org: Design and Construction of the IRT: Civil Engineering (Scott)". www.nycsubway.org. Retrieved April 15, 2016.
- "Subway Construction: Then and Now". The New York Public Library. Retrieved April 15, 2016.
- "www.nycsubway.org: Subway FAQ: Facts and Figures". www.nycsubway.org. Retrieved February 26, 2016.
- "MTA has been leaving dangerous debris exposed for years: conductor". New York Post. February 23, 2019. Retrieved February 23, 2019.
- "www.nycsubway.org: IRT White Plains Road Line". www.nycsubway.org. Retrieved February 26, 2016.
- Cox, Jeremiah. "Myrtle Av-Broadway (J, M, Z) – The SubwayNut". www.subwaynut.com. Retrieved February 26, 2016.
- Dougherty, Peter (2006) . Tracks of the New York City Subway 2006 (3rd ed.). Dougherty. OCLC 49777633 – via Google Books.
- DuTemple, Lesley A. (2002). The New York Subways. Twenty-First Century Books. ISBN 978-0822503781. Retrieved January 28, 2016.
- MacKechnie, Christopher.
"The Two Methods of Subway Construction".
about.com. Retrieved May 7, 2014.
In exchange for these advantages are two major disadvantages. One is financial: "deep bore" construction costs significantly more than 'cut and cover'
- "No. 7 Subway Line Extension". Richard Dattner & Partners Architects. Archived from the original on March 15, 2012. Retrieved February 28, 2010.
- "West Side Development Project Gets The Green Light". NY1. December 21, 2009. Archived from the original on April 7, 2012. Retrieved February 28, 2010.
- Cuza, Bobby (February 19, 2009). "Crews Lower Giant Drill Into 7 Line Tunnel". NY1. Archived from the original on May 5, 2009. Retrieved February 28, 2010.
- "New York State Society of Professional Engineers Recognizes No. 7 Line Project". Tunnel Business Magazine. July 3, 2013. Retrieved August 20, 2013.
- " "Blasting on Second Avenue". thelaunchbox.blogspot.com. March 22, 2010.
- Siff, Andrew (May 14, 2010). "2nd Ave. Subway Tunnel Dig Begins". WNBC. Retrieved May 14, 2010.
- "MTA | news | Tunneling Begins Under Second Avenue". www.mta.info. Retrieved February 10, 2016.
- Various (September 23, 2011). "Second Avenue Subway has a breakthrough moment; several billion more are all the M.T.A. wants". Capital New York. Archived from the original on March 31, 2014. Retrieved March 31, 2014.
- Duffus, R.L. (September 22, 1929). "Our Great Subway Network Spreads Wider – New Plans of Board of Transportation Involve the Building of More Than One Hundred Miles of Additional Rapid Transit Routes for New York". The New York Times. Retrieved August 19, 2015.
- "100 Miles of Subway in New City Project; 52 of them in Queens" (PDF). The New York Times. September 16, 1929. Retrieved March 25, 2016.
- "The futureNYCSubway: The IND Second System". vanshnookenraggen. February 2010. Retrieved March 13, 2016.
- nycsubway.org – History of the Independent Subway
- O'Grade, Jim (January 3, 2012). "Lost Subways: Abandoned Stations and Unbuilt Lines". wnyc.org. Archived from the original on August 9, 2013. Retrieved February 10, 2016.
- "New Subway Line on 6th Ave. Opens at Midnight Fete". The New York Times. December 15, 1940. p. 1. Retrieved October 7, 2011.
- "Rail Line is Added to Subway System". The New York Times. May 16, 1941. p. 25. Retrieved October 4, 2011.
- Freeman, Ira Henry (June 28, 1956). "Rockaway Trains to Operate Today" (PDF). nytimes.com. The New York Times. Retrieved June 29, 2015.
- "Rapid Transit Service Coming Brochure". www.thejoekorner.com. New York City Transit Authority. July 1, 1968. Retrieved January 24, 2016.
- "KK a new service". www.thejoekorner.com. New York City Transit Authority. July 1, 1968. Retrieved January 24, 2016.
- "IRT Passengers Get New 148th St. Station". The New York Times. May 14, 1968. p. 95. Retrieved October 4, 2011.
- Johnson, Kirk (December 9, 1988). "Big Changes For Subways Are to Begin". The New York Times. Retrieved July 5, 2009.
- Lorch, Donatella (October 29, 1989). "The 'Subway to Nowhere' Now Goes Somewhere". The New York Times. Retrieved October 20, 2011.
- Donohue, Pete (March 17, 2009). "MTA opens new $530M South Ferry station". New York Daily News. Retrieved July 21, 2016.
- Fitzsimmons, Emma G. (September 10, 2015). "Subway Station for 7 Line Opens on Far West Side". The New York Times. Retrieved September 13, 2015.
- "Capital Programs 7 Line Extension". mta.info. September 13, 2015. Retrieved March 25, 2016.
- Ingram, David (December 31, 2016). "New York tale: a century-old subway dream becomes reality". Yahoo. Retrieved January 1, 2017.
- "Annual Information Statement 2001 Appendix A The Related Entities" (PDF). Metropolitan Transportation Authority (MTA). 2001. Retrieved April 26, 2015.
- Tunneling to the Future: The Story of the Great Subway Expansion That Saved New York (2001).
- "Introduction to Subway Ridership". Metropolitan Transportation Authority (MTA). Retrieved April 18, 2016.
- "Facts and Figures: Annual Subway Ridership 2014–2019". Metropolitan Transportation Authority. 2020. Retrieved May 26, 2020.
- Goldman, Ari (October 23, 1982). "RIDERSHIP OF SUBWAYS SINCE 1917". The New York Times. Retrieved June 5, 2017.
- on YouTube MTA YouTube Web Page. Made July 15, 2010. Retrieved July 17, 2010.
- "Subway Service Guide" ( PDF). Metropolitan Transportation Authority. September 2019. Retrieved September 22, 2019.
- Cox, Bobby. "New York City Subway". Deaf Echo. Archived from the original on November 2, 2014. Retrieved February 10, 2016.
- "Rules of The Subway". Fodors. Retrieved September 21, 2013.
- "Subway Map" ( PDF). Metropolitan Transportation Authority. October 21, 2019. Retrieved January 18, 2018.
- "Late Night Subway Service September 2015" (PDF). mta.info. Metropolitan Transportation Authority. September 2015. Retrieved February 29, 2016.
- Haberman, Clyde (April 4, 2008). "Train Skip Your Stop? It's No Mistake, It's Just the Weekend". The New York Times. Retrieved March 25, 2016.
- Tangel, Andrew. "New York's Subway System Can't Keep Pace With Growing Number of Riders". Wall Street Journal. ISSN 0099-9660. Retrieved March 25, 2016.
- Finnegan, Jack, Belden Merims and Jennifer Cecil (2007). Newcomer's Handbook for Moving to and Living in New York City: Including Manhattan, Brooklyn, the Bronx, Queens, Staten Island, and Northern New Jersey. Portland, OR: First Books Inc. ISBN 978-0912301723. p. 336.
- "NYCT – Service Advisory". travel.mtanyct.info. Retrieved February 10, 2016.
- "MTA/New York City Transit – Subway Service Information". December 20, 2010. Archived from the original on December 20, 2010. Retrieved February 10, 2016.
- "NYCT Subway (@NYCTSubway) – Twitter".
- Official paint monikers since the colors were fixed in 1979: Grynbaum, Michael (May 10, 2010). "Take the Tomato 2 Stops to the Sunflower". New York Times, City Room Blog. Retrieved May 11, 2010.
- Official MTA video mentions "lime green" for the G line. "Subway Colors and Names". MTA Info. July 15, 2010. Retrieved August 5, 2010.
- MTA Developer Resources Download, CSV file
- Taylor Romine; Laura Ly. "Michael Hertz, who helped design New York City's subway map, dies at 87". CNN. Retrieved March 1, 2020.
- New Subway Map is Here MTA.info website. Retrieved June 18, 2010.
- "The (Mostly) True Story of Helvetica and the New York City Subway". AIGA. aiga.org. November 18, 2008. Retrieved February 4, 2009.
- Hogarty, Dave (August 3, 2007). "Michael Hertz, Designer of the NYC Subway Map". Gothamist. Archived from the original on August 18, 2009. Retrieved July 4, 2009.
- "Late Night Subway Service" ( PDF). Metropolitan Transportation Authority. July 2019. Retrieved September 22, 2019.
- "Introducing The Weekender". MTA.info (YouTube). September 30, 2011. Retrieved October 1, 2011.
- "The Weekender". MTA.info. Retrieved October 12, 2013.
- Grynbaum, Michael M. (September 15, 2011). "Aid for Baffled Weekend Subway Riders". The New York Times. Retrieved September 30, 2011.
- "Introducing 'The Weekender'". MTA.info. September 16, 2011. Retrieved September 18, 2011.
- "MTA Launches Interactive Online Map Ahead Of Difficult Weekend For Subways". NY1. September 16, 2011. Archived from the original on June 28, 2014. Retrieved September 18, 2011.CS1 maint: bot: original URL status unknown ( link)
- Subway Map Gets A Makeover NY1 local news channel. Retrieved May 28, 2010.
- "Subway Entrance Stylings". Forgotten New York. February 14, 2005. Retrieved December 6, 2015.
- Kennedy, Randy (August 13, 2002). "Tunnel Vision; The Light at the Top of the Subway Stairs". The New York Times. Retrieved July 7, 2008.
- "Reopening Closed Subway Entrances" (PDF). pcac.org. New York City Transit Riders Council. November 2001. Retrieved December 6, 2015.
- "MTA New York City Transit Jay Street / Lawrence Street Stations Contract A-35913 / A-35914 / A-35927 / A-35978" (PDF). Metropolitan Transportation Authority. Retrieved December 6, 2015.
- "www.nycsubway.org: IRT West Side Line". www.nycsubway.org. Retrieved February 24, 2016.
- "MTA/New York City Transit – Subway Station Booth". web.mta.info. Retrieved March 13, 2016.
- Grynbaum, Michael M. (October 8, 2009). "M.T.A. Station Agent Cuts Leave Riders Lost". New York Times. Retrieved March 13, 2016.
- "Riding Safely". Metropolitan Transportation Authority. Retrieved December 6, 2015.
- Goldman, Ari L. (March 8, 1982). "For Off-Hours, Subway Zones for Safer Wait". The New York Times. ISSN 0362-4331. Retrieved April 15, 2016.
- "IND STation Lengths". August 6, 2011. Archived from the original on August 6, 2011. Retrieved February 14, 2016.
- "Map Reveals Shortage of Wheelchair-Accessible NYC Subway Stations". DNAinfo New York. Archived from the original on March 6, 2016. Retrieved February 28, 2016.
- "mta.info | Accessibility". web.mta.info. Retrieved February 10, 2016.
- "NYC Subway Needs $1.7 Billion In New Elevators, Feds Say". Curbed NY. February 2016. Retrieved February 29, 2016.
- Ross, Barbara; Gregorian, Dareh (June 29, 2016). "Disability rights groups sue MTA over inaccessible subway station". NY Daily News. Retrieved July 7, 2016.
- Rosenberg, Eli (April 25, 2017). "New York City's Subway System Violates Local and Federal Laws, Disability Groups Say". The New York Times. ISSN 0362-4331. Retrieved April 26, 2017.
- "New York City Subway Car Fleet Jan 2012 through January 2016". TheJoeKorner. Retrieved February 6, 2016.
- "BMT-IND Car Assignments – December 6, 2015". www.thejoekorner.com. Retrieved February 14, 2016.
- "R-Type Cars 1932 to 1987". www.thejoekorner.com. Retrieved March 13, 2016.
- Second Avenue Subway Draft Environmental Impact Statement, "Glossary" (PDF). (45.6 KB)
- "3.3.3 A, C (Fulton Street) Line Services and Structural Issues" (PDF). nyc.gov. New York City Department of City Planning. 2007. Archived from the original (PDF) on June 6, 2010. Retrieved February 9, 2016.
- "Car History". www.erictb.info. Retrieved March 13, 2016.
- "R-Type Cars 1932 to 1987". thejoekorner.com.
- Chan, Sewell (November 30, 2005). "New Subway Cars Promise All Kinds of Information". The New York Times. Retrieved October 27, 2007.
- *R142/A: Siegal, Nina (October 1, 2000).
"Neighborhood Report: New York Underground; 2 New Trains in the Subways: Catch Them if You Can". The New York Times. Retrieved January 24, 2016.
- R143: "Kawasaki completes NYCT R143 order. (Market).(New York City Transit)(subway cars contract)". Railway Age. March 1, 2003. Archived from the original on February 20, 2016. Retrieved July 29, 2018.
- R160: Lueck, Thomas J. (August 18, 2006). "City Subways Put New Cars Into Service as a Test Run". The New York Times. Retrieved January 24, 2016.
- R179: Barone, Vincent (September 6, 2016). "New MTA subway cars to arrive for testing, will replace oldest fleet". AM New York. Retrieved September 8, 2016.
- R188: "MTA | news | New Subway Cars Being Put to the Test". New.mta.info. November 18, 2013. Retrieved August 24, 2014.
- "New Technology Train Rolled Out This Morning Along the E Line". Metropolitan Transportation Authority. December 22, 2008. Retrieved December 7, 2015.
- "The voice behind the closing doors would like to clear something up". nypress.com. Straus News. March 18, 2003. Retrieved December 7, 2015.
- "MTA 2017 Final Proposed Budget November Financial Plan 2017–2020, Volume 2" (PDF). mta.info. Metropolitan Transportation Authority. November 16, 2016. Retrieved November 17, 2016.
- "MTA/New York City Transit – Fares and MetroCard". web.mta.info. Retrieved February 10, 2016.
- Hallum, Mark (August 12, 2020). "OMNY payment system now at turnstiles in most subway stations: MTA". amNewYork. Retrieved September 23, 2020.
- "MetroCard Calculator to ease fare increase pain". am New York.
- "MTA/New York City Transit – Fares and MetroCard". mta.info.
- "mta.info – Reduced-Fare". mta.info.
- "About OMNY". omny.info. Retrieved September 23, 2020.
"New Home Ready for Transit Board" (PDF). The New York Times. March 25, 1951. Retrieved October 14, 2016.
"City Board Rushes Move to New Site: Transportation Unit Receives U.S. Order to Vacate and Speeds to Brooklyn" (PDF). The New York Times. March 31, 1951. Retrieved October 14, 2016.
"Transit Board Now In Its New Building" (PDF). The New York Times. April 3, 1951. Retrieved October 14, 2016.
- Young, Michelle (February 12, 2016). "The MTA's Special Armored Money Train that Ran from 1951 to 2006 in NYC". Untapped cities. Retrieved October 14, 2016.
- Zimmerman, Alex (November 30, 2015). "Inside the Brooklyn Building that Held the Subway's Secrets". Atlas Obscura. Retrieved October 14, 2016.
- Olshan, Jeremy (January 16, 2006).
"End of the Line: Secret Cash Train Retired".
New York Post. Archived from
the original on January 18, 2006. Retrieved October 14, 2016.
Chung, Jen (January 16, 2006). "Money Train Retires". Gothamist. Archived from the original on December 4, 2015. Retrieved October 14, 2016.
- Salkin, Allen (June 15, 2000). "Old Metrocard Can Be a Fare-Ly Profitable Item". New York Post. Retrieved March 13, 2016.
- Faison, Seth (June 2, 1993). "3,000 Subway Riders, Cards in Hand, Test New Fare System". The New York Times. Retrieved April 25, 2010.
- Donohue, Pete (August 26, 2014). "With work on Greenpoint Tube set to end, advocates want free G-to-J/M transfer to be permanent". New York Daily News. Retrieved February 28, 2016.
- "NYC Transit G Line Review" (PDF). mta.info. Metropolitan Transportation Authority. July 10, 2013. Retrieved February 28, 2016.
- Newman, Andy (July 3, 1998). "Hop On, Hop Off: The Unlimited Metrocard Arrives". The New York Times. Retrieved January 8, 2010.
- Newman, Andy. "Guide to NYC Subway". FreshNYC. Archived from the original on January 5, 2018. Retrieved June 10, 2015.
- "MTA: Say Goodbye to Fun Cards". WNYC. Retrieved February 9, 2016.
- Rivoli, Dan (October 23, 2017). "MTA approves plan to scrap MetroCards for 'tap' payment system". NY Daily News. Retrieved October 24, 2017.
- Barron, James (October 23, 2017). "New York to Replace MetroCard With Modern Way to Pay Transit Fares". The New York Times. ISSN 0362-4331. Retrieved October 24, 2017.
- Chan, Sewell (January 14, 2005). "Subways Run by Computers Start on L Line This Summer". The New York Times. Retrieved May 24, 2007.
- "Twenty-Year Capital Needs Assessment" (PDF). mta.info. Metropolitan Transportation Authority. August 2009. Retrieved September 12, 2016.
- "Chapter 2: Project Alternatives" (PDF). mta.info. Metropolitan Transportation Authority. p. 4. Retrieved September 12, 2015.
- "'FASTRACK' Repairs Mean Service Disruptions On 4, 5 And 6 Subway". CBS New York. January 1, 2012. Retrieved September 8, 2017.
- "MTA Fastrack To Expand To Beyond Manhattan". WNYC. May 14, 2012. Retrieved September 8, 2017.
- Rivoli, Dan (July 18, 2016). "Cuomo unveils new designs aimed to fix MTA subway crowding". NY Daily News. Retrieved July 19, 2016.
- Schmidt, Samantha (July 18, 2016). "Cuomo Details Redesigned Subway Cars and Major Station Renovations". The New York Times. Retrieved July 19, 2016.
- "Innovation". Metropolitan Transportation Authority. Retrieved September 11, 2017.
- Tangel, Andrew (October 28, 2015). "More NYC Subway Countdown Clocks Won't Arrive Anytime Soon". WSJ. Retrieved October 29, 2015.
- Wolfe, Jonathan (August 7, 2017). "New York Today: New Subway Clocks". The New York Times. Retrieved September 11, 2017.
- "New 'Help Point' Intercoms Head from MoMa to the Subway". DNAinfo. April 5, 2011. Archived from the original on September 12, 2017.
- Smith, Dave (January 11, 2016). "All New York City subway stations will have WiFi by the end of this year". Business Insider. Retrieved September 11, 2017.
- Nelson, Sarah. "MTA Unveils New "On The Go" Touch-Screen Plaything At Bowling Green Subway Station". Gothamist. Archived from the original on February 16, 2016. Retrieved February 10, 2016.
- "MTA 2017 Final Proposed Budget November Financial Plan 2017–2020, Volume 2" (PDF). mta.info. Metropolitan Transportation Authority. November 16, 2016. Retrieved November 17, 2016.
- Barone, Vincent (December 8, 2016). "Source: MTA on track with subway station Wi-Fi goal". am New York. Retrieved December 8, 2016.
- Chan, Sewell (January 31, 2006). "A Test at 25 Stations Subway Riding Without the Swiping". The New York Times. ISSN 0362-4331. Retrieved February 10, 2016.
- Kaminer, Ariel (June 11, 2010). "Testing PayPass on New York's Buses and Trains". The New York Times. Retrieved March 25, 2016.
- Rivoli, Dan; Gregorian, Dareh (April 12, 2016). "MTA to solicit proposals for 'New Fare Payment System,' taking first step in finding MetroCard replacement". New York Daily News. Retrieved November 30, 2016.
- Metropolitan Transportation Authority (July 20, 2015). CBTC: Communications-Based Train Control (video). YouTube. Retrieved April 30, 2018.
- "Moving Forward: Accelerating the Transition to Communications-Based Train Control for New York City's Subways" (PDF). rpa.org. Regional Plan Association. May 2014. Retrieved September 12, 2016.
- Somers, James (November 13, 2015). "Why New York Subway Lines Are Missing Countdown Clocks". The Atlantic. Retrieved February 28, 2016.
- "Moving Forward Accelerating the Transition to Communications-Based Train Control for New York City's Subways" (PDF). Regional Plan Association. May 2014. Retrieved March 25, 2016.
- "The JoeKorNer – Looking out the Front – Signals". www.thejoekorner.com. Retrieved February 28, 2016.
- "www.nycsubway.org: Subway Signals: Train Stops". www.nycsubway.org. October 21, 2015. Retrieved October 21, 2015.
- Vantuono, William C. (February 24, 2009). "MTA L Line trains go to full CBTC". www.railwayage.com. Archived from the original on March 14, 2016. Retrieved March 13, 2016.
- Neuman, William (May 22, 2007). "For Less Crowding on L Train, Think 2010, Report Says". The New York Times. Retrieved May 24, 2007.
- "New Tech Promises Less Subway Crowding, If Albany Doesn't Beggar the MTA | Streetsblog New York City". October 13, 2011. Retrieved February 10, 2016.
- "2008–2013 MTA Capital Program Accelerated Program Presentation to the Board" (PPT). Metropolitan Transportation Authority. February 27, 2008. pp. 15–16. Retrieved February 28, 2008.
- "Capital Program Oversight Committee Meeting November 2018" (PDF). Metropolitan Transportation Authority. November 13, 2018. Retrieved April 20, 2018.
- Parkinson, Tom; Fisher, Ian (1996). Rail Transit Capacity. Transportation Research Board. ISBN 978-0309057189.
- Berger, Paul (March 29, 2018). "New York City Transit Chief: Subway Signal Overhaul Could Be Done in 10 to 15 Years". The Wall Street Journal. ISSN 0099-9660. Retrieved March 30, 2018.
- Rosenberg, Zoe (March 29, 2018). "NYC subway's aging signals could be fixed in 10–15 years, says transit head". Curbed NY. Retrieved March 30, 2018.
- "MTA | news | Know Before You Go with MTA Subway Time™". Mta.info. December 28, 2012. Retrieved April 11, 2014.
- "NYC Subway accidents". nycsubway.org. 2009. Retrieved December 12, 2009.
- "The Mayor to Begin B.R.T Inquiry Today" (PDF). The New York Times. November 1, 1918. p. 24. Retrieved December 12, 2009.
- Galea, Sandro; Tracy, M; Piper, T.M.; Bucciarelli, A.M.; Tardiff, K.; Gershon, R; Vlahov, D (November 4, 2009). "Epidemiology of suicide in the New York City subway system". American Public Health Association. Retrieved November 27, 2009.
- "Deaths by New York subway train strikes shrank slightly for 2013, MTA says". NY Daily News. December 31, 2013. Retrieved April 13, 2014.
- Sozzi, Brian (April 21, 2014). "Sozzi: The Boring Old Subway is Now Digital, and That's Pretty Awesome". TheStreet. Retrieved March 25, 2016.
- Donohhue, Pete (August 11, 2014). "MTA is testing sensors, video systems that would save people who fall on subway tracks". NY Daily News. Retrieved August 18, 2014.
- "MTA tests motion sensing lasers, thermal image cameras to save fallen straphangers from subway trains". NY Daily News. December 12, 2013. Retrieved April 13, 2014.
- Neuman, William (April 5, 2007). "2nd Ave. Subway Platforms May Get Glass Walls and Sliding Doors". New York Times. Retrieved February 10, 2016.
- "L Train Platform Eyed for AirTrain-Like Safety Doors in MTA Pilot Program". DNAinfo New York. Archived from the original on February 24, 2016. Retrieved February 29, 2016.
- Furfaro, Danielle (November 15, 2016). "MTA boss makes another push for subway platform doors". New York Post. Retrieved November 16, 2016.
- Honan, Katie (April 22, 2019). "Subway Train Drags Woman to Death". The Wall Street Journal. ISSN 0099-9660. Retrieved April 28, 2019.
- "Safest and riskiest areas of New York's subway system revealed in Daily News investigation". New York Daily News. June 22, 2014. Retrieved March 18, 2016.
- "If You See Something, Say Something – Subway – Spring 2011". MTA.info (YouTube). April 19, 2011. Retrieved April 19, 2011.
- Yakas, Ben. "NYPD Reportedly Wants To Ban "Career Criminals" From Subways". Gothamist. Archived from the original on March 3, 2016. Retrieved March 18, 2016.
- City, Citizens Crime Commission of New York; NY, Regional Plan Association (1985). Downtown safety, security, and economic development: a joint report. Downtown Research & Development Center. ISBN 978-0915910229.
- Kelling, George L. (2009). "How New York Became Safe: The Full Story". City Journal. Retrieved November 24, 2009.
- Glazer, Nathan (1979). "On Subway Graffiti in New York" (PDF). National Affairs (54). pp. 3–12. Archived from the original (PDF) on October 17, 2015. Retrieved November 24, 2009.
- "Don't Do It (1988)". MTA.info (YouTube). January 9, 2010. Retrieved May 28, 2011.
- Wolff, Craig (November 12, 1993). "Subway Crime Declining, New Transit Figures Show". The New York Times. Retrieved November 26, 2009.
- "Rudy Giuliani". JoinRudy2008.com. Archived from the original on September 4, 2007. Retrieved July 15, 2007.
- Levitt, Steven D.: "Understanding Why Crime Fell in the 1990s: Four Factors that Explain the Decline and Six that Do Not", Journal of Economic Perspectives, 18(1), 163–190
- "Mayor Michael R. Bloomberg testifies before the Metropolitan Transportation Authority Board" (Press release). November 9, 2004. Retrieved November 26, 2009.
- "village voice > nyclife > Forbidden Photos, Anyone? by Matt Haber". February 28, 2005. Archived from the original on February 28, 2005. Retrieved March 18, 2016.
- "Threat Of Subway Photo Ban Riseth Again". Gothamist. November 30, 2004. Archived from the original on April 20, 2008. Retrieved July 7, 2008.
- Kabak, Benjamin (February 10, 2010). "Unlawful arrest for subway photography costs city $30K". Second Ave. Sagas. Retrieved November 24, 2015.
- "Investigation of Individuals engaged in suspicious photography and video surveillance". New York City Police Department. April 3, 2009. Retrieved March 25, 2016.
- "mta.info | Rules of Conduct Section 1050.9 Restricted areas and activities". web.mta.info. Retrieved March 13, 2016.
- "American Civil Liberties Union : NYCLU Sues New York City Over Subway Bag Search Policy". November 1, 2009. Archived from the original on November 1, 2009. Retrieved March 18, 2016.
- "MacWade v. Kelly (Challenging the NYPD's subway bag-search program)". New York Civil Liberties Union. July 6, 2007. Retrieved November 24, 2015.
- "MTA NYC Transit Introduces New Hazmat Response Vehicle". April 11, 2008. Archived from the original on May 9, 2008. Retrieved April 14, 2008.
- Zraick, Karen; Johnston, David (September 15, 2009). "Man in Queens Raids Denies Any Terrorist Link". The New York Times. Retrieved January 30, 2014.
- "N.Y.C. bomb plot suspect Zazi pleads guilty". CBC. Associated Press News. February 20, 2010. Retrieved January 30, 2014.
- Neuman, Sewell Chan and William (November 10, 2008). "M.T.A. Faces $1.2 Billion Deficit". City Room. Retrieved February 9, 2016.
- "City straphangers feel sting as fares hiked again". NY Daily News. Retrieved March 13, 2016.
- "MTA/New York City Transit – NYC Transit 2010 Service Reduction Proposals". MTA. March 19, 2010. Retrieved March 25, 2016.
- Fitzsimmons, Emma G. (June 29, 2017). "Cuomo Declares a State of Emergency for New York City Subways". The New York Times. ISSN 0362-4331. Retrieved July 25, 2017.
- Santora, Marc; Fitzsimmons, Emma G. (June 27, 2017). "Subway Derailment in Manhattan Injures Dozens". The New York Times. ISSN 0362-4331. Retrieved July 25, 2017.
- Fitzsimmons, Emma G. (July 21, 2017). "Subway Train Derails in Brooklyn, Disrupting Morning Commute". The New York Times. ISSN 0362-4331. Retrieved July 26, 2017.
- Fitzsimmons, Emma G. (July 17, 2017). "Subway Track Fire Sends 9 to Hospital and Snarls Morning Commute". The New York Times. ISSN 0362-4331. Retrieved July 26, 2017.
- Kirby, Jen (July 17, 2017). "Track Fire Is the Latest Subway Disaster". Daily Intelligencer. Retrieved July 26, 2017.
- Muoio, Danielle (July 16, 2017). "These photos sum up just how bad New York's commuter nightmare has gotten". Business Insider. Retrieved July 26, 2017.
- "MTA: Unsecure Rail Stored on Tracks Caused Harlem Subway Derailment". NY1. June 28, 2017. Archived from the original on June 28, 2017. Retrieved June 29, 2017.
- Armstrong, Kiley; Eltman, Frank (June 28, 2017). "l Supervisors suspended amid NYC subway derailment probe". The Washington Post. Archived from the original on June 28, 2017. Retrieved June 29, 2017.
- Santora, Marc; Ferré-sadurní, Luis (June 27, 2017). "Subway Derailment in Manhattan Injures Dozens". The New York Times. ISSN 0362-4331. Retrieved June 27, 2017.
- Honan, Katie (July 24, 2017). "'Abnormal Condition' on Car Caused Q Train Derailment, MTA Official Says". DNAinfo New York. Archived from the original on August 15, 2017. Retrieved July 26, 2017.
- Cook, Lauren (July 24, 2017). "Q train derailment caused by improper maintenance: MTA". am New York. Retrieved July 26, 2017.
- Barron, James (June 29, 2017). "M.T.A. Asks Transit Fans, 'Who Wants to Be a Subway-Saving Millionaire?'". The New York Times. ISSN 0362-4331. Retrieved July 26, 2017.
- Gabrielli, Sarah; McShane, Larry (June 29, 2017). "MTA seeks 'genius' to fix subways for $1M prize". NY Daily News. Retrieved July 26, 2017.
- Fitzsimmons, Emma G. (July 25, 2017). "Rescue Plan to Improve Subways Includes Removing Seats". The New York Times. ISSN 0362-4331. Retrieved July 25, 2017.
"MTA | Press Release | MTA Headquarters | MTA Chairman Joseph Lhota Unveils New York City Subway Action Plan". www.mta.info. Retrieved July 25, 2017.
- See also: "NYC Subway Action Plan". Retrieved July 25, 2017.
- "MTA Chair Unveils $836 Million Subway Stabilization Plan". NBC New York. July 25, 2017. Retrieved July 26, 2017.
- Clark, Dray (July 25, 2017). "MTA chairman unveils plan to fix NYC subway system". ABC7 New York. Retrieved July 26, 2017.
- Vantuono, William (March 12, 2018). "MTA Genius Transit Challenge winners announced". Railway Track & Structures. Retrieved March 14, 2018.
- Stringer, Scott M. (October 1, 2017). "The Economic Cost of Subway Delays". nyc.gov. Office of the New York City Comptroller. Retrieved October 4, 2017.
- Rosenthal, Brian M.; Fitzsimmons, Emma G.; LaForgia, Michael (November 18, 2017). "How Politics and Bad Decisions Starved New York's Subways". The New York Times. ISSN 0362-4331. Retrieved November 18, 2017.
- Neuman, William (June 26, 2007). "Some Subways Found Packed Past Capacity". The New York Times. Retrieved July 7, 2008.
- "Appendix A: Service Needs Assessment Methodology MTA New York City Transit New York City Department of Transportation April 2009" (PDF). MTA New York City Transit. April 2009. Retrieved March 25, 2016.
- "The Approval Matrix, bottom left quadrant". New York. April 22, 2013.
- Harshbarger, Rebecca (September 21, 2015). "Ridership below prediction at new 7 train station". am New York. Retrieved September 23, 2015.
- "MTA – news – $205.8M in Contracts Approved to Install Communications-Based Train Control System". Metropolitan Transportation Authority. July 20, 2015.
- "MTR 124, Whose Mega-Project ? – Planners Say LIRR-Grand Central Project Folly Without Better East Side Transit". www.tstc.org. Archived from the original on February 15, 2016. Retrieved February 9, 2016.
- Bloom, Philip M. Plotch and Nicholas D. "Good and Bad News on Second Avenue Subway". Gotham Gazette. Retrieved April 15, 2016.
- "East Side Access Draws Opponents – The New York Sun". www.nysun.com. Retrieved April 15, 2016.
- Fitzsimmons, Emma G. (May 3, 2016). "Surge in Ridership Pushes New York Subway to Limit". The New York Times. ISSN 0362-4331. Retrieved May 3, 2016.
- "How a Single Mechanical Failure Sparked 625 MTA Delays". Daily Intelligencer. February 23, 2016. Retrieved February 29, 2016.
- Chan, Sewell (January 14, 2005). "Subways Run by Computers Start on L Line This Summer". The New York Times. Retrieved May 24, 2007.
- "Capital Program Oversight Committee Meeting: July 2015" (PDF). New York City: Metropolitan Transportation Authority. July 2015. Archived from the original (PDF) on September 6, 2015. Retrieved August 11, 2015.
- "MTA 2010–2014 Capital Program Questions and Answers" (PDF). mta.info. Metropolitan Transportation Authority. Archived from the original (PDF) on March 2, 2012. Retrieved March 16, 2016.
- "MTA Twenty-Year Capital Needs Assessment 2015–2034" (PDF). mta.info. Metropolitan Transportation Authority. Retrieved March 18, 2016.
- "Twenty Year Capital Needs Assessment 2010–2029" (PDF). mta.info. Metropolitan Transportation Authority. Retrieved March 18, 2016.
- "Second Avenue Subway FEIS Chapter 2" (PDF). mta.info. Metropolitan Transportation Authority. Archived from the original (PDF) on April 9, 2014. Retrieved March 18, 2016.
- "MTA Service Bump Next June Won't Keep Up With Growth in Subway Trips | Streetsblog New York City". October 26, 2015. Retrieved March 13, 2016.
- Whitford, Emma. "MTA Announces More Frequent Service On 11 Subway Lines, Plus The Times Square Shuttle". Gothamist. Archived from the original on March 1, 2016. Retrieved March 13, 2016.
- "MTA Capital Program 2015–2019" (PDF). mta.info. Metropolitan Transportation Authority. October 28, 2015. Retrieved October 28, 2015.
- "MTA Capital Program Oversight Committee Meeting: January 2016" (PDF). mta.info. Metropolitan Transportation Authority. January 2016. Archived from the original (PDF) on January 29, 2016. Retrieved January 23, 2016.
- "NYC: Look Forward to Finally Riding the Subway Car of the Future". CityLab. Retrieved February 29, 2016.
- mtainfo (November 16, 2015), Platform Controller Program, retrieved December 13, 2016
- "Your Ride Matters Platform Controllers". web.mta.info. Metropolitan Transportation Authority. 2015. Retrieved March 13, 2016.
- "Your Ride Matters Working to Improve Your Ride". web.mta.info. Metropolitan Transportation Authority. 2015. Retrieved March 13, 2016.
- Harshbarger, Rebecca (May 18, 2015). "MTA to fight overcrowding by getting trains out of stations faster". New York Post. Retrieved December 13, 2016.
- "MTA 2017 Budget and 2017–2020 Financial Plan Adoption Materials" (PDF). mta.info. Metropolitan Transportation Authority. December 12, 2016. Retrieved December 13, 2016.
- Rivoli, Dan (November 7, 2017). "MTA workers to get iPhones to keep riders informed during delays". New York Daily News. Retrieved November 8, 2017.
- "mta.info | Your Ride Matters". web.mta.info. Retrieved March 13, 2016.
- Rivoli, Dan (May 19, 2015). "NYC subway overcrowding plan to be tested out on some lines". AM New York. Retrieved May 19, 2015.
- Rebecca Harshbarger (May 18, 2015). "MTA to fight overcrowding by getting trains out of stations faster". New York Post. Retrieved May 19, 2015.
- "Subway Delay Presentation". Scribd. May 18, 2015. Retrieved March 25, 2016.
- Mancini, John (October 2, 2010). "Search Results". TWC News. Archived from the original on March 6, 2016. Retrieved March 25, 2016.
- Chan, Sewell (August 8, 2007). "Why the Subways Flood". City Room. Retrieved February 28, 2016.
- Donohue, Pete (August 9, 2007). "Downpour swamps subways, stranding thousands of riders". New York Daily News. Retrieved August 23, 2007.
- "MTA Evening Update". www.nyc.gov. August 8, 2007. Retrieved March 13, 2016.
- "Rain cripples New York City transit". www.chinadaily.com.cn. Retrieved March 13, 2016.
- "August 8, 2007 Storm Report" (PDF). Metropolitan Transportation Authority. September 20, 2007. Archived from the original (PDF) on October 29, 2007. Retrieved October 27, 2007.
- Dunlap, David W. (September 19, 2008). "New Subway Grates Add Aesthetics to Flood Protection". The New York Times. Retrieved October 7, 2008.
- Lee, Jennifer (October 1, 2008). "Three in One – Flood Protection, Benches and Bike Parking". The New York Times. Retrieved October 7, 2008.
- "New raised storm grates earn architectural praise". Second Ave. Sagas. April 16, 2010. Retrieved March 13, 2016.
- Boissoneault, Lorraine. "Superstorm Sandy Anniversary – How the Subway Survived". The Weather Channel. Retrieved November 24, 2015.
- Cox, Jeremiah. "Hurricane Sandy: Effects on Subway & Rail Service". subwaynut.com. Retrieved March 13, 2016.
- "mta.info | Superstorm Sandy: One Year Later". web.mta.info. Metropolitan Transportation Authority. Archived from the original on August 3, 2016. Retrieved July 23, 2016.
- "A look back at the 1966 transit strike that shut down NYC". amNewYork. January 7, 2016. Retrieved May 8, 2020.
- "Transit System Rolls Amid Debate On Contract and Fate of 50 Fare; Fare Outlook Is Gloomy CITY TRANSIT ROLLS AS PACT IS DEBATED Union Is Deeply Divided Hearing on New Penalties Put Off Savings in 'Break' Time" (PDF). The New York Times. April 13, 1980. ISSN 0362-4331. Retrieved February 11, 2018.
- "Buses, subways on the move again in New York - Dec 23, 2005". CNN.com. December 23, 2005. Retrieved May 8, 2020.
- Pressman, Gabe (November 8, 2011). "Remembering When the Lights Went Out in 1965". NBC New York. Retrieved May 8, 2020.
- Norman, Derek M. (July 14, 2019). "The 1977 Blackout in New York City Happened Exactly 42 Years Ago". The New York Times. ISSN 0362-4331. Retrieved May 8, 2020.
- Scott, Janny (August 15, 2003). "THE BLACKOUT OF 2003: THE STRANDED; In Subways, in Traffic In Elevators: All Stuck". The New York Times. ISSN 0362-4331. Retrieved May 8, 2020.
- Aaron Feis, Sabrina Ford & Jennifer Fermino (August 27, 2011). "Hurricane Irene halts NY, NJ mass transit". The New York Post. Retrieved August 28, 2011.
- "NYC's subway service running OK Monday after Irene". The Washington Post. August 29, 2011. Archived from the original on July 14, 2019. Retrieved August 29, 2011.
- Clark, Roger (August 29, 2011). "Straphangers Have Relatively Easy Monday Morning Rush". NY1. Archived from the original on October 5, 2012. Retrieved August 30, 2011.
- "MTA Shuts Down Sunday Night, As Hurricane Nears". Huffington Post. October 28, 2012. Retrieved February 28, 2016.
- "Rebuilding the Rockaways After Hurricane Sandy". mta.info. Metropolitan Transportation Authority. Archived from the original on November 11, 2012. Retrieved November 18, 2012.
- "Cuomo: MTA To Restore A Train Subway Service To The Rockaways « CBS New York". May 16, 2013.
- "MTA on Twitter". Twitter.
- "Hurricane Sandy Recovery Service As of November 20" (PDF). Metropolitan Transportation Authority. November 20, 2012. Retrieved March 25, 2016.
- "MTA News". mta.info.
- on YouTube
- Mann, Ted (March 8, 2013). "Downtown, Old Stop on Subway to Reopen". WSJ. Retrieved March 25, 2016.
- Flegenheimer, Matt (March 8, 2013). "Storm Damage Prompts Return of Old Subway Stop". The New York Times.
- "mta.info – Restoring South Ferry Station". mta.info.
- "mta.info – Old South Ferry Station to Reopen for Service". mta.info.
- Donohue, Peter (December 8, 2014). "$194 million contract awarded to upgrade South Ferry subway station". Daily News. NYDailyNews.com. Retrieved February 7, 2015.
- Furfaro, Danielle (October 29, 2015). "Sandy-ravaged subway entrance to be closed 9 months". New York Post. Retrieved October 31, 2015.
- Marc Santora (January 26, 2015). "Snowstorm Barrels Into Northeast; New York City Subways and Buses Are Halted". NY Times. Retrieved January 26, 2015.
- "[Update] NYC Travel Ban Lifted, MTA Service Will Resume This Morning". Gothamist. Archived from the original on January 29, 2015.
- ABC News (January 28, 2015). "Blizzard 2015: New England Gets Walloped by More Than 2 Feet of Snow". ABC News.
- Flegenheimer, Matt. "Leaders in New York and New Jersey Defend Shutdown for a Blizzard That Wasn't". nytimes.com. Retrieved January 28, 2015.
- Dolce, Chris; Lam, Linda; Wiltgen, Nick. "Juno: Heavy Snow Continues in New England". Weather.com. The Weather Channel, LLC. Retrieved January 28, 2015.
- "NYC grinds to a halt amid deadly East Coast blizzard". USA TODAY. January 23, 2016.
- "Above-ground subway service shutting down at 4 p.m.; bus service suspended at noon". Second Ave. Sagas. January 23, 2016.
- "Mass Transit Ramping Back Up After Blizzard". NBC New York.
- Gardiner, Aidan; Honan, Katie (March 13, 2017). "Above-Ground Subway Service Shuts Down at 4 a.m. Tuesday, Cuomo Says". DNAinfo New York. Archived from the original on March 14, 2017. Retrieved March 14, 2017.
- Goldbaum, Christina (April 30, 2020). "N.Y.C.'s Subway, a 24/7 Mainstay, Will Close for Overnight Disinfection". The New York Times. ISSN 0362-4331. Retrieved April 30, 2020.
- "MTA service during the coronavirus pandemic".
- Meyer, David (May 6, 2020). "Why 'ghost trains' still run during nightly coronavirus subway shutdowns". New York Post. Retrieved December 6, 2020.
- Troutman, Matt (August 4, 2020). "MTA Suspends Outdoor Train Service Over Isaias High Winds". Patch. Retrieved August 5, 2020.
- Kabak, Benjamin (June 22, 2009). "Less Transit money leads to dirtier stations". Second Ave. Sagas. Retrieved November 24, 2015.
- Kabak, Benjamin (September 30, 2010). "ABC 7: MTA cleaners slacking on the job". Second Ave. Sagas. Retrieved November 24, 2015.
- Barone, Vincent (March 28, 2017). "MTA trashes pilot program that removed bins from stations". am New York. Retrieved April 2, 2017.
- "NYC takes aim at subway rats". United Press International. March 24, 2009. Retrieved June 27, 2009.
- " Rats rule the subway rails, platforms", Matthew Sweeney, Newsday, August 13, 2008
- Beja, Marc (September 8, 2011). "Rat bites woman in subway station as she waits for train". amNewYork. Archived from the original on November 28, 2011. Retrieved September 12, 2011.
- "Rats in subway are health hazard for New Yorkers". Brooklyn Today – The Brooklyn News Network. January 12, 2010. Archived from the original on March 13, 2010.
- Namako, Tom (March 24, 2009). "You Dirty Rats! New Traps Target Subway Vermin". New York Post. Retrieved June 27, 2009.
- Redwine, Tina (October 5, 2011). "MTA To Launch New Cleaning Initiative To Combat Rat Infestations". NY1. Archived from the original on October 8, 2011. Retrieved October 5, 2011.
- Epstein, Emily (October 24, 2011). "MTA removes bins hoping to reduce trash". Metro. Archived from the original on October 27, 2011. Retrieved December 13, 2011.
- "MTA | news | MTA New York City Transit: Trash Can Free Stations Pilot Yields Positive Results". www.mta.info. Retrieved March 11, 2016.
- "MTA trashes pilot program that removed bins from stations". am New York. Retrieved December 24, 2018.
- "New York City Has Dirtiest Subway System". 247wallst.com. Retrieved March 13, 2016.
- "NYC Transit – MTA Launches Phase 2 of Operation Track Sweep: A Two-Week Track Cleaning Blitz". MTA. September 12, 2016. Retrieved December 21, 2018.
- "New Vacuum Trains Aim to Suck Trash Right in its Tracks". www.ny1.com. Retrieved December 21, 2018.
- "MTA | news | Sustained MTA Effort to Keep the Tracks Clean Includes Two-Week Track Cleaning Blitz at All 469 Subway Stations and New Cleaning Equipment". www.mta.info. Retrieved August 10, 2016.
- "New York Subway Noise Levels Can Result In Hearing Loss For Daily Riders". ScienceDaily. March 25, 2016. Retrieved March 25, 2016.
- "Got Ear Plugs? You May Want to Sport Them on the Subway and Other.... – News – Mailman School of Public Health". Internet Archive. June 24, 2010. Archived from the original on June 24, 2010. Retrieved March 25, 2016.
- Marshall, Aarian (June 16, 2016). "Get Ready for Quieter NYC Subway Stations (Yes, It's Possible)". WIRED. Retrieved June 19, 2016.
- "Performer Rules". Metropolitan Transportation Authority. Retrieved May 10, 2020.
- MTA's Arts for Transit's Music Under New York (MUNY) Section MTA.info website.
- "2010 Music Under New York Auditions". MTA.info (YouTube). May 27, 2010. Retrieved May 29, 2010.
- "2011 Music Under New York Auditions". MTA.info (YouTube). May 27, 2011. Retrieved May 28, 2011.
- "2012 Music Under New York Auditions". MTA.info (YouTube). May 16, 2012. Retrieved May 16, 2012.
- Ramey, Corinne (May 17, 2015). "Musicians Try Out for Coveted Spots to Play in the Subway". Wall Street Journal. ISSN 0099-9660. Retrieved February 10, 2016.
- "Miss Subways through the years: The iconic NYC beauty queens then and now". NY Daily News. Retrieved February 28, 2016.
- Bayen, Ann (March 29, 1976). "Token Women". New York Magazine. New York Media, LLC. p. 46.
- Klein, Alvin (June 6, 1993). "'On the Town' in Revival at Goodspeed Opera". The New York Times.
- "Ms. Subway 2004 Crowned". Gothamist. Archived from the original on October 26, 2013.
- "Mets/Yankees Metrocard". June 14, 1997. Archived from the original on June 14, 1997. Retrieved February 15, 2016.
- Araton, Harvey (July 4, 2012). "Nets Move to Brooklyn With Legitimacy in Sight". The New York Times. ISSN 0362-4331. Retrieved February 7, 2016.
- McCarthy, Michael (February 21, 2015). "The NHL's coming Subway Series: Islanders vs. Rangers". The Sporting News. Retrieved April 11, 2016.
- "Press Releases". mta.info.[ permanent dead link]
- "Watch: MTA Adds A Dose Of 'Nostalgia' With Vintage Trains". Huffington Post. November 28, 2011. Retrieved February 10, 2016.
- "Ride into the past with the MTA Holiday Nostalgia Train". Metro US. November 20, 2017. Retrieved December 22, 2017.
- "Holiday Subway". forgotten-ny.com. Forgotten New York. Retrieved March 25, 2016.
- "Untapped Mailbag: Advertising Takeovers on the Shuttle to Times Square". Untapped Cities. Retrieved May 2, 2016.
- Lee, Jennifer (October 2, 2008). "A 'Full Body Wrap' for Times Sq. Shuttle". The New York Times. ISSN 0362-4331. Retrieved January 15, 2017.
- Reuters (November 25, 2015). "Nazi-inspired ads for The Man in the High Castle pulled from New York subway". The Guardian. ISSN 0261-3077. Retrieved October 4, 2017.
- Robertson, Adi (November 24, 2015). "Amazon pulls Nazi symbols from New York subway ad campaign". The Verge. Retrieved October 4, 2017.
- Bodner, Brett; Becker, Jake (October 3, 2017). "'Hopeless' Knicks greet NYC subway riders due to FS1 ad campaign". NY Daily News. Retrieved October 4, 2017.
- Bonesteel, Matt; Bieler, Des (October 3, 2017). "Knicks owner James Dolan reportedly 'furious' at Fox Sports 'hopeless' ads". The Washington Post. ISSN 0190-8286. Retrieved October 4, 2017.
- Associated Press (June 28, 2010). "MTA Wraps Subway in Train-Length Ad". NBC New York. Retrieved June 18, 2019.
- Vranica, Suzanne (January 28, 2014). "And Now, Ads for the Super Bowl Ads – WSJ". Online.wsj.com. Retrieved June 28, 2015.
- "Dastardly, British and Brand New to the Super Bowl". The New York Times. January 14, 2014. Retrieved June 18, 2019.
- Jennings, Rebecca (April 15, 2015). "Lane Bryant's #ImNoAngel Subway Ads Causing Controversy in Brooklyn Orthodox Communities". Racked NY. Retrieved June 18, 2019.
- Emily Bass; Julia Jones (June 16, 2019). "PRIDE + PROGRESS New York subways celebrate Pride Month with new 'Pride Trains' and MetroCards". CNN. Retrieved June 17, 2019.
- Clayton Guse; Thomas Tracy (June 14, 2019). "Everyone on board the Pride train! MTA celebrates LGBTQ culture with Pride-themed trains, MetroCards". New York Daily News. Retrieved June 17, 2019.
- Why New York City Stopped Building Subways, by Jonathan English, April 16, 2018.
|Wikimedia Commons has media related to New York City Subway.|