Line 4 (Chongqing Rail Transit)

Line 4 of Chongqing Rail Transit is a rapid transit line in Chongqing, China.

Since June 2020, some Express trains through operate from Line 4 into the Loop line.



Phases 1 and 2
Phase 1 (Min'an Ave. – Tangjiatuo) is 15.754 km in length (underground section is 11.075 km, elevated section is 4.679 km). In June 2018, debugging of the first segment of Phase I commenced. Phase 1 of Line 4 began operating on December 28, 2018.

Phase 2 (Tangjiatuo – Huangling) is 32.8 km in length (21.25 km underground and 11.55 km elevated ) with 15 stations (10 underground stations and 5 elevated stations). In 2022, debugging of this segment commenced. The segment opened on June 18, 2022.

Western Extension
The Western extension of Line 4 started construction in March 2021. It will add 9 more stations west of station. The extension is 11 km in length.
 * Under construction