Procurement of TACS train control system for Qingdao Metro Line 5, China October 26, 2026 | Asia Pacific Tenders, Tenders & Contracts Country: China Organisation: Qingdao Metro Group Corporation Limited Description: Bids are invited to supply a train autonomous control system (TACS) for Qingdao Metro Line 5, including its extension.... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password