The East Coast Integrated Depot (ECID) is a large integrated bus and train depot located in Changi that will serve three Mass Rapid Transit (MRT) lines in Singapore, the East West Line (EWL), the Downtown Line (DTL) and the Thomson-East Coast Line (TEL). It is currently under construction, with expected completion in 2026.

The Mass Rapid Transit system, locally known by the initialism MRT, is a rapid transit system in Singapore and the island country's principal mode of railway transportation. The system commenced operations in November 1987 after two decades of planning with an initial 6 km (3.7 mi) stretch consisting of five stations. The network has since grown to span the length and breadth of the country's main island – with the exception of the forested core and the rural northwestern region – in accordance with Singapore's aim of developing a comprehensive rail network as the backbone of the country's public transportation system, averaging a daily ridership of 3.4 million in 2019.