SMRT begins trial runs on North-South Line CBTC system, Singapore April 19, 2017 | Asia Pacific News Singapore’s SMRT Corporation Limited (SMRT) has commenced full day trial run on the first of 57 trains fitted with a communications-based train control (CBTC) system on the North-South Line. The... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password