The East West line (EWL) is a high-capacity Mass Rapid Transit (MRT) line operated by SMRT, running from Pasir Ris station in the east to Tuas Link station in the west, with an additional branch between Changi Airport and Tanah Merah stations. It is the second Mass Rapid Transit line to be built in Singapore. The line is the longest on the MRT network "(this title will be given to the Cross Island Line upon its complete opening by the 2040s)", with 35 stations, 8 of which (from Lavender to Tiong Bahru and Changi Airport stations) are underground. The line is coloured green on the rail map.