Osaka Loop Line
A 323 series train on the Osaka Loop Line in September 2017
Overview
Native name	大阪環状線
Owner	JR West
Locale	Osaka, Japan
Termini	Tennōji Shin-Imamiya
Stations	19
Service
Type	Heavy rail
System	Urban network
Operator(s)	JR West JR Freight
Depot(s)	Morinomiya
Rolling stock	323 series 221 series 223-0 series 223-2500 series 225-5000 series 271 series 281 series 283 series 287 series 289 series
Daily ridership	984,395 (FY2015) [1]
History
Opened	April 5, 1898 (first section) April 25, 1961 (entire line)
Technical
Line length	21.7 km (13.5 mi)
Number of tracks	3 (Fukushima — Nishikujo) 2 (other sections)
Track gauge	1,067 mm (3 ft 6 in)
Electrification	1,500 V DC ( overhead line)
Operating speed	100 km/h (62 mph)
Signalling	Automatic block signalling
Train protection system	ATS-P
Route map

The Osaka Loop Line (大阪環状線, Ōsaka kanjō-sen) is a railway loop line in Japan operated by the West Japan Railway Company (JR West). It encircles central Osaka.

Part of a second, outer loop line, the Osaka Higashi Line, from Hanaten to Kyuhoji was opened on March 15, 2008, and the line from Shigino to Shin-Ōsaka opened in March 2019. This entry covers the original central loop line.

Outline

The loop line consists of two tracks around the heart of metropolitan Osaka. All train services consist of eight cars, with distinctive orange color with white JR graphics on the front, rear and sides. The train schedule varies, but on average, two trains leave Tennōji Station and Ōsaka Station every five minutes, in opposite directions.

Operation

Osaka Loop Line trains
Legend
Osaka Loop Line trains
Osaka Kyōbashi Nishikujō Tennōji
JR Yumesaki Line through trains
Osaka Kyōbashi Nishikujō Sakurajima Tennōji
Yamatoji Rapid, Regional Rapid
Osaka Kyōbashi Nishikujō Tennōji Nara Kamo
Kansai Airport Rapid, Kishūji Rapid, Direct Rapid
Osaka Kyōbashi Nishikujō Tennōji Kansai Airport Wakayama
Haruka
Yasu Kyoto Shin-Ōsaka Nishikujō Tennōji Kansai Airport
Kuroshio
Kyoto Shin-Ōsaka Nishikujō Tennōji Wakayama Shingū

On this line, JR West operates several types of trains. The line serves as a link between Ōsaka Station in northern Osaka (actually the Umeda district), and Tennōji in southern central Osaka. Some Limited Express trains linking north and south of the Osaka–Kobe–Kyoto area use the line as a bypass between the Tōkaidō Main Line in the north and the Hanwa Line in the south. Traffic is heavier in the eastern half, Osaka–Kyōbashi–Tennōji, than in the western half via Nishi-Kujō.

Direction

The completely loop shaped Osaka Loop Line is unable to use the 'up' and 'down' train direction convention commonly applied in Japanese railways – e.g., trains traveling to Tokyo are usually 'up' trains and vice versa. Instead, the words "outer circle" (or outer loop) (外回り, Soto mawari) and the "inner circle" (内回り, Uchi mawari) are used to refer to the direction. The outer is clockwise, the inner counterclockwise.

If rules, such as the registration of the line at the Ministry of Land, Infrastructure, Transport and Tourism apply, ^[2] the inner loop is down.

Local

Local trains are operated all day. Some operate over the complete loop, while some serve the eastern half between Osaka and Tennōji via Kyōbashi.

Eight-car EMUs of 323 series are used. 221 series, 223 series and 225 series are used only for morning rush.

Sakurajima Line trains

Trains of the Sakurajima Line (JR Yumesaki Line) are now operated through to the loop line to/from Kyōbashi and Tennoji.

Eight-car 323 series EMUs are used.

Rapids of Kansai Main Line

Through trains to the Kansai Main Line ( Yamatoji Line) began operated in 1973. "Yamatoji Rapid" (大和路快速, Yamatoji Kaisoku) and "Regional Rapid" (区間快速, Kukan Kaisoku) trains originate at Tennōji on the loop, passing the loop as "inner" via Osaka, and after stopping at Tennōji after a complete circuit, exit the loop onto the Kansai Main Line and terminate at Kamo, Nara or Ōji. In the loop, Yamatoji Rapids pass some stations while Regional Rapids stop all.

For "Yamatoji Rapid" and "Regional Rapid", usually 8-car and 4+4 car 221 series EMUs are used.

Rapids of Hanwa Line

Trains to the Hanwa Line, "Kansai Airport Rapid" (関空快速, Kankū Kaisoku) for Kansai Airport and Kishūji Rapid (紀州路快速, Kishūji Kaisoku) for Wakayama originate at either Tennoji or Kyobashi, and together with other types of rapid trains, operate on the inner loop via Osaka, pausing at Tennoji and then exiting from the loop. This pattern commenced in 1989, but increased significantly in 1994 on the opening of Kansai Airport.

8-car 223 series and 225 series EMUs in 4+4 formations are used for Kansai Airport and Kishūji rapids. 113 series 4-car units were used for rapids of Shin-Ōsaka - Kii-Tanabe in early morning and late night. They were withdrawn in 2010.

Limited express

Charged Limited Express services such as Haruka for Kansai International Airport, and south bound Kuroshio on the Hanwa Line and Kisei Main Line (Kinokuni Line) heading for the scenic southern Wakayama Prefecture utilize the Osaka Loop Line to bypass the Tōkaidō Main Line and reach the Hanwa Line. On the loop, aside from Tennōji, limited numbers of trains stop only at Nishi-Kujō.

Between the Tōkaidō Main Line and the Osaka Loop Line, trains utilize the Umeda Freight Line [ ja] via a new underground route through Ōsaka Station, until it merges the main line at Shin-Ōsaka. This route was introduced in 1989 on the completion of a bypass track from the Hanwa Line to platforms of the Kansai Main Line at Tennōji. Until then no through operations were possible from the Hanwa Line.

281 series and 271 series EMUs are used for Haruka, 283 series EMUs, 287 series EMUs and 289 series EMUs for Kuroshio.

Freight trains

After the abandonment of the Naniwa freight terminal, freight trains on the line operate only between Fukushima and Nishikujō, from the "Umeda Freight Line" to Ajikawaguchi on the Sakurajima Line (JR Yumesaki Line).

Stations

Listed counterclockwise: All stations are in the city of Osaka, Osaka Prefecture.

No.	Station		Distance (km)	Transfers	Location
↑ Loop line towards Shin-Imamiya ↑
JR-O01	Tennōji	天王寺	11.0	Kansai Main Line (Yamatoji Line) ( Q20 ) Hanwa Line ( R20 ) Osaka Metro: Midōsuji Line (M23) Tanimachi Line (T27) Kintetsu Minami Osaka Line (F01: Osaka Abenobashi Station) Hankai Uemachi Line (HN01: Tennoji-ekimae Station) (Nankai Main Line Tennoji Branch - closed 1993)	Tennōji
JR-O02	Teradachō	寺田町	12.0
JR-O03	Momodani	桃谷	13.2
JR-O04	Tsuruhashi	鶴橋	14.0	Kintetsu Nara Line (A04), Osaka Line (D04) Osaka Metro: Sennichimae Line (S19)
JR-O05	Tamatsukuri	玉造	14.9	Osaka Metro: Nagahori Tsurumi-ryokuchi Line (N19)
JR-O06	Morinomiya	森ノ宮	15.8	Osaka Metro: Chūō Line (C19), Nagahori Tsurumi-ryokuchi Line (N20)	Chūō
JR-O07	Osakajō-kōen	大阪城公園	16.7		Jōtō
JR-O08	Kyōbashi	京橋	17.5	Katamachi Line (Gakkentoshi Line)/ JR Tōzai Line ( H41 ) Keihan Main Line (KH03) Osaka Metro: Nagahori Tsurumi-ryokuchi Line (N22)
JR-O09	Sakuranomiya	桜ノ宮	19.3		Miyakojima
JR-O10	Temma	天満	20.1	Osaka Metro: Sakaisuji Line (K12: Ōgimachi Station)	Kita
JR-O11	Ōsaka	大阪	0.0	Tōkaidō Main Line ( JR Kyoto Line ( A47 ), JR Kobe Line ( A47 ), JR Takarazuka Line ( G47 )), Osaka Higashi Line ( F01 ), JR Tōzai Line (  H44 : Kitashinchi Station) Osaka Metro: Tanimachi Line (T20: Higashi-Umeda Station), Yotsubashi Line (Y11: Nishi-Umeda Station), Midōsuji Line (M16: Umeda Station) Hankyu: Kōbe Line, Kyoto Line, Takarazuka Line (HK-01:Osaka-umeda Station) Hanshin Main Line (HS 01:Osaka-umeda Station)	Kita
JR-O12	Fukushima	福島	1.0	JR Tōzai Line ( H45 : Shin-Fukushima Station) Hanshin Main Line (HS 02) Keihan Nakanoshima Line (KH54: Nakanoshima Station)	Fukushima
JR-O13	Noda	野田	2.4	Osaka Metro: Sennichimae Line (S12: Tamagawa Station)
JR-O14	Nishikujō	西九条	3.6	Sakurajima Line (JR Yumesaki Line) ( P14 ) Hanshin Namba Line (HS 45)	Konohana
JR-O15	Bentenchō	弁天町	5.2	Osaka Metro: Chūō Line (C13)	Minato
JR-O16	Taishō	大正	7.0	Osaka Metro: Nagahori Tsurumi-ryokuchi Line (N11)	Taishō
JR-O17	Ashiharabashi	芦原橋	8.2		Naniwa
JR-O18	Imamiya	今宮	8.8	Kansai Main Line ( Yamatoji Line)  Q18
JR-O19	Shin-Imamiya	新今宮	10.0	Kansai Main Line (Yamatoji Line)  Q19  Nankai (NK03): Nankai Main Line, Kōya Line Osaka Metro: Midōsuji Line (M22: Dōbutsuen-mae Station), Sakaisuji Line (K19: Dōbutsuen-mae Station) Hankai Line (HN52: Minami-Kasumichō Station)
↓ Loop line towards Tennōji ↓

Stopping patterns

Stations

• ● : All trains stop.
• ▲ : Stop, outer loop (Tennoji → Nishikujo → Osaka → Kyobashi → Tennoji)
• Number: Track (Platform) numbers to arrive at and depart from.
• | : All trains skip

Station	Local 普通	Local 普通	Regional Rapid 区間快速	Yamatoji Rapid 大和路快速	Direct Rapid 直通快速	Rapid 快速	Kishuji Rapid 紀州路快速	Kansai Airport Rapid 関空快速
Tennoji	● 11-14	● 11-14	● 11-14	● 11-14	▲ 13, 14	● 11-14	● 11-14	● 11-14
Teradacho	●	●	●	●	▲	●	●	●
Momodani	●	●	●	●	▲	●	●	●
Tsuruhashi	●	●	●	●	▲	●	●	●
Tamatsukuri	●	●	●	●	▲	●	●	●
Morinomiya	●	●	●	●	▲	●	●	●
Osakajokoen	●	●	●	●	▲	●	●	●
Kyobashi	●	●	●	●	▲	●	●	●
Sakuranomiya	●	●	●	●	▲	●	●	●
Temma	●	●	●	●	▲	●	●	●
Osaka	●	●	●	●	▲	●	●	●
Fukushima	●	●	●	●	▲	●	●	●
Noda	●	●	●	|	▲	|	|	|
Nishikujo	●	●	●	●	▲	●	●	●
Bentencho	●		●	●	▲	●	●	●
Taisho	●		●	●	▲	●	●	●
Ashiharabashi	●		●	|	▲	|	|	|
Imamiya	●		●	|	▲	|	|	|
Shin-Imamiya	● 1, 4		● 2, 3	● 2-4	▲ 3, 4	● 2-4	● 2-4	● 2-4
Tennoji	● 11, 14		● 15-18	● 15-18	▲ 18	● 15, 18	● 15, 18	● 15, 18
Through to/from	Loop service in Osaka Loop Line	JR Yumesaki Line	Yamatoji Line		Hanwa Line			Hanwa Line & Kansai Airport Line

Rolling stock

Local

• 323 series (since 24 December 2016)

The first of a fleet of 21 new 323 series eight-car EMU trains were introduced from 24 December 2016, scheduled to entirely replace the fleet of 23 103 and 201 series trains by 2018. ^[3] As of December 2021, few of the remaining 103 series (from Nara Line) and 201 series (Osaka Higashi & Yamatoji Line) continue to be used on the Loop Line.

Yamatoji Rapid, Regional Rapid

• 221 series

Kansai Airport Rapid, Kishūji Rapid, Direct Rapid and Local

• 223 series (0 and 2500 subseries)
• 225 series (5000 and 5100 subseries)

Limited express

• 271 series ( Haruka service, from Spring 2020)
• 281 series (Haruka service)
• 283 series ( Kuroshio service)
• 287 series (Kuroshio service)
• 289 series (Kuroshio service)

Freight

Locomotives seen hauling freight trains include the M250 series, EF65, EF66, EF81, EF210 and DE10.

Former

Passenger

• 72 series
• 101 series (March 22, 1964 – April 28, 1991)
• 103 series (1969 – 3 October 2017) ^[4]
• 113 series (until December 10, 2011)
• 381 series (Kuroshio service, until October 30, 2015)
• 201 series ( 2005 – 7 June 2019) ^[5]

• 
  103 series (left) and 201 series EMUs

Freight

• DD51

Fares

A special discount rate is applied for travels within the Osaka Loop Line, the Sakurajima Line and the segment between JR Namba Station and Tennōji Station of the Kansai Main Line (collectively called the Osaka Loop Zone (大阪環状線内, Ōsaka Kanjōsen-nai)). The following table is the rate for adult single-ride tickets. ^[6] (Note: Fractions of one kilometre are rounded up to the nearest full kilometre.)

Kilometre	Yen
1–3	120
4–6	160
7–10	170
11–15	190
16–20	260

For travel between a station within the zone and a station out of the zone or between two stations out of the zone, fares are calculated in accordance with a universal fare table and the discount rate as above is not applicable.

For the calculation of the fare for travel between two stations out of the zone that includes the segment between Ōsaka Station and Tennōji Station of the Osaka Loop Line, where two routes (10.7 km or 6.6 mi route via Temma and 11.0 km or 6.8 mi route via Fukushima) are practical, the shorter route is always used irrespective of the actual travel route. ^{[7] [8]}

History

The Ōsaka Loop Line consists of four segments, namely:

Jōtō Line

Eastern half of present line, Ōsaka – Tennōji via Kyōbashi

Nishinari Line

The northwestern quarter, Osaka – Nishi-Kujō

Kansai Main Line freight line

Southwestern portion, Tennōji – Sakaigawa Junction

Purpose-built section

The remainder to complete the loop, Nishi-Kujō – Sakaigawa Junction

Jōtō Line

The Ōsaka to Tennōji via Kyōbashi section (the eastern half of Osaka Loop Line) was opened by the Osaka Railway (大阪鉄道, Osaka Tetsudō) (which also opened the present Minami Osaka Line network) to link it to the Japanese Government Railway (JGR) network in 1895. The line was opened in 2 stages: Tennōji – Tamatsukuri (2 mi. 28 chain, ca. 3.8 km) on 28 May; and Tamatsukuri – Umeda (4 mi. 29 chain, ca. 7.0 km) on 17 October.

Earlier, in 1889, the company opened its main line from Kashiwara – Tennōji – Minatomachi (湊町, present JR Namba) which includes a short section of the Osaka Loop Line, being Tennōji – Imamiya; Imamiya station itself, located between Tennōji and Minatomachi, was opened in 1890.

The Osaka Railway merged with the Kansai Railway (関西鉄道, Kansai Tetsudō, also read as Kansei or Kwansai) in 1900, creating a single entity for the line from Tennōji Station to JGR Ōsaka Station. The Kansai Railway was acquired by the national government in 1907 under the 1906 Railway Nationalization Act. In 1909 the line was named the "Jōtō Line" (城東線, Jōtō sen).

In 1930, distrances were changed to metric, thus the distance changed from 6.6 miles. to 10.7 km. Electrification of the Jōtō Line was commissioned in 1933.

Nishinari Line

The Osaka to Nishi-Kujō section (the northwestern quarter of the line) was built by the Nishinari Railway (西成鉄道, Nishinari Tetsudō) to provide rail access to the Osaka Port. In 1898, the company opened the Osaka – Ajikawaguchi line, which was leased to JGR in 1904. In 1906 the company was nationalized under the act of the same year. In 1909, the line was named the "Nishinari Line" (西成線, Nishinari sen) which included the present-day Sakurajima Line.

The Nishinari Line was electrified in 1941.

Kansai Main Line Freight Line

The Tennōji to Sakaigawa Signal Box (between Taishō and Bentenchō, closed in 2006 when the branch to the port closed) section (south-western portion of the loop) was constructed for freight traffic by the JGR to the port area in 1928, connecting to a freight branch line of the Kansai Main Line, Imamiya – Naniwa (浪速) – Osaka-minato (大阪港, apart from the present Ōsakakō Station on the Osaka Municipal Subway Chūō Line) with a distance of 5.2 mi. (ca. 8.4 km). In 1930 with the change to metric measurement, it became 8.2 km. The former Osaka-Minato and Osaka-Tōkō stations were closed in 1984.

Purpose-built loop line section

To complete the Loop Line, new tracks were constructed between Nishi-Kujō and Sakaigawa Signal Box by the then Japanese National Railways. In 1961, this section opened and the new Osaka Loop Line was named for the entirety of the then Jōtō Line, Osaka – Nishi-Kujō section of the Nishinari Line (the rest, Nishi-Kujō – Sakurajima was named the Sakurajima Line) and the new Nishi-Kujō – Taishō – Tennōji section.

In 1964, operation as a complete Loop Line commenced with the opening of elevated double tracks around Nishi-Kujō. Until then the operation had been undertaken in the shape of a mirrored "6", Sakurajima – Nishi-Kujō – Osaka – Kyōbashi – Tennōji – Nishi-Kujō. The Tennōji – Shin-Imamiya section was quadrupled in 1968, to separate operations from the Kansai Main Line.

See also

• Yamanote Line
• Osaka Higashi Line

References

This article incorporates material from the corresponding article in the Japanese Wikipedia