The Taoyuan Metro (formerly Taoyuan Rail Transit and officially Taoyuan Mass Rapid Transit System) is a rapid transit system serving Taoyuan City, as well as parts of New Taipei City and Taipei City, in Taiwan.[3] The most recently proposed network includes 11 lines and extensions, of which 2 are now under construction. The Taoyuan Airport MRT (Taipei Main Station - Huanbei) is the only line currently in operation. The system opened with the opening of the first line in the system, Taoyuan Airport MRT, for trial passenger service on 2 February 2017 and revenue passenger service on 2 March 2017.
In March 2011, the Bureau of High Speed Rail, which oversees construction of the project, announced that the 11.4km (7.1mi)-long elevated structure from Dayuan Station (A15) to Xingnan Station (A20) had been completed.[5] The rest of the Taoyuan Line passed an environmental impact assessment in July 2014. Construction was expected to last from June 2015 to 2019.[6] Construction of the Green Line started in October 2018 and is expected to finish in 2026.[7] Construction of the Brown Line is expected to start in 2023, and expected to be completed by 2026.[8][9]