Passenger services begin on Qingdao Metro Line 2 Western Extension, China December 18, 2024 | Asia Pacific News, News Passenger services have commenced on the Western Extension of Line 2 of the Qingdao Metro network. The extension spans 3.84 km and covers three stations. With the commencement of operations on this ex... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password