The Taoyuan Airport MRT (Taipei Main Station - Huanbei) is the only line currently in operation.

[4] Express trains stop at Taipei Main Station, New Taipei Industrial Park, Chang Gung Memorial Hospital, Airport Terminal 1, Airport Terminal 2.

All lines will use standard gauge track, with the exception of the Red line which will use 3 ft 6 in (1,067 mm) narrow-gauge railway as it is basically a reconstruction of the Taoyuan portion of the TRA Western Line into an underground railway tunnel intended to support more frequent, rapid transit-like local rail services (rather like the reconstruction of TRA railways in Greater Taipei and Kaohsiung).

[5] The rest of the Taoyuan Line passed an environmental impact assessment in July 2014.

Media related to Taoyuan MRT at Wikimedia Commons This Taiwanese rapid transit article is a stub.