The entire line runs underground. The excavation of tunnels using the
cut-and-cover method resulted in large scale detouring of road traffic. Because of that, the line runs beneath existing roads and totals 28.3 km (17.6 mi).
Due to
Taipei City Hall being at the centre of the
Taipei 101 New Year's festivities, intervals between trains can be reduced to a minimum of 135 seconds, transporting up to 39,000 passengers per hour.[1] This results in an average of about 27 trains per hour on the line during peak hours.
21 May 2014: The
2014 Taipei Metro attack occurs between Longshan Temple and
Jiangzicui when 21-year-old university student Cheng Chieh attacked passengers with a fruit knife, leading to 4 deaths and 24 injuries.
28 September 2018: Half-height
platform edge doors are installed in Tucheng, making all stations on this line and entire Taipei Metro system have some form of platform doors.