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.

Opening timeline

Stations

Phases 1 and 2

Phase 1 (Min'an Ave. – Tangjiatuo) is 15.754 km (9.789 mi) in length (underground section is 11.075 km (6.882 mi), elevated section is 4.679 km (2.907 mi)). 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 (20.4 mi) in length (21.25 km (13.20 mi) underground and 11.55 km (7.18 mi) 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

Western extension (Shunshuisi Park – Jiazhoulu) is 11 km (6.8 mi) in length, all are underground with 9 stations (Shunshuisi Park station is not opened). Construction started on March 2, 2021 and begin operating on 10 February 2026 at 2:00 pm (Shunshuisi Park station is not opened).

Stations (West to East)

Notable news

The line is nicknamed the "Basket Line" by some locals, as rural, mostly elderly, residents use the line to bring baskets of vegetables into the city to sell at marketplaces. Some people suggested to ban vegetable baskets on the line, which was rejected by the operator.