and the stations on the line will have some art works in the theme. Expansion CRT is expected to have 8 lines criss-crossing the urban districts by 2020 and a loop line connecting the commercial areas in the urban area. The other 9 lines are expected to be in operation by 2050. Phase 2 & 3 projects Phase 4 projects The short-term plan, including Line 4 (West extension), Line 6 (Extension to Chongqing East), Lines 7, 15, 17, 24, 27 and Line 18 (Phase 2) was approved by NDRC. Construction on several lines started in March 2021. In April 2021, Lines 7 and 17 were redesigned from mostly elevated heavy monorails, similar to Lines 2 and 3, to conventional underground Type As metro lines akin to Lines 4, 5, 9 and 10. See also Chongqing Suburban Railway List of metro systems List of monorail systems References Notes External links Chongqing Rail Transit official website , Google translation Chongqing Transport Card Info , Google translation UrbanRail.net's page on the Chongqing Rail Transit Map Photographs of Chongqing Rail Transit Projects established in 1946 2005 establishments in China Railway lines opened in 2005 Rail transport in Chongqing Rapid transit in China Underground rapid transit in China Monorails in China Alweg people movers