Construction Phase The Thomson–East Coast Line (TEL) is a medium-capacity Mass Rapid Transit (MRT) line in Singapore. Coloured brown on the rail map, it is fully underground and, when complete, will serve 32 stations over 43 kilometres (27 mi) in length, becoming one of the world's longest driverless rapid transit lines. It runs along a combined north–south and east–west corridor, starting in the north at Woodlands town, passing through Upper Thomson and the towns of Ang Mo Kio and Bishan, before heading south to Orchard Road and Marina Bay, then running eastwards along the east coast through Kallang, Marine Parade and Bedok South, before ending at Upper East Coast.