LTA to upgrade platform screen doors at MRT stations, Singapore July 27, 2025 | Asia Pacific News, News The Land Transport Authority (LTA) will begin upgrading platform screen doors (PSDs) at 15 underground MRT stations across the North-South Line (NSL) and East-West Line (EWL) starting in August 2025. ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password