Passenger services commenced 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 was opened to passenger service on February 10, expanding Chongqing’s urban rail network and increasing the system’s total operating mileage to 5... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password