Changsha Metro

Line 1 construction began in 2010 and was opened on June 28, 2016.[3][4] Line 1 has a line length of 23.62 kilometres (14.68 mi) with 20 stations, of which 1 is elevated and 19 are underground.[5] The construction budget was 14.2 billion RMB.[3] A 9.9-kilometre (6.2 mi) extension to Line 1 is under construction, adding 5 stations north of its current terminal at Kaifu District Government; it will open to the public in 2022. Line 1 is colored red on system maps.

Line 2 is a line running from west to east Changsha. It was opened on April 29, 2014[6] and extended in December 2015. The line is 26.6 kilometres (16.5 mi) long with 23 stations. Line 2 is colored light blue on system maps.

Line 4 started construction on December 31, 2014. The line opened on 26 May 2019 with 25 stations.[7] Line 4 has a total length of 33.5 kilometres (20.8 mi) with 25 stations.[8] The line travels between Guanziling station and Dujiaping station. Line 4 is colored purple on system maps.[9]

Line 3 started construction on January 3, 2014. It will open to the public in 28 June 2020.[10] It will have a total length of 36.4 kilometers with 25 stations. It will travel between Shantang station and Guangsheng station. Line 3 will be colored yellow-green on system maps.[9]

Line 5 started construction in 2015.[11] It will open to the public in 28 June 2020.[10] It will have a total length of 22.5 kilometres (14.0 mi) with 18 stations.[11][8] It will travel between Maozhutang station and Shuiduhe station. Line 5 will be colored yellow on system maps.[9]

The middle section of Line 6 started construction on November 28, 2017.[12] It will open to the public in 2021. The middle section will have a total length of 30.46 kilometres (18.93 mi) with 23 stations.[13] It will travel between Shaoguang station and Changqing station. Line 6 will be colored dark blue on system maps.