Passenger operations commence on Chongqing Rail Transit Line 4 western extension, China February 11, 2026 | Asia Pacific News, News The western extension of Chongqing Rail Transit Line 4 commenced operations on February 10, 2026, adding 11 km to the city’s metro network and increasing the total operating mileage to 593 km. The ext... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password