Singapore LTA-SMRT begin trial on North-South Line CBTC system March 30, 2017 | Asia Pacific News Singapore’s Land Transport Authority (LTA) and SMRT Corporation Limited (SMRT) have launched trial runs on the communications-based train control (CBTC) system of the North-South Line. The CBTC ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password