Singapore MRT

The Mass Rapid Transit (MRT) is a rapid transit system in Singapore and the island country's principal mode of railway transportation. After two decades of planning, the system commenced operations in November 1987 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 3.49 million in 2025.

The MRT network encompasses approximately 242.6 km (150.7 mi) of grade-separated route on standard gauge. As of 2024, there are currently 143 operational stations dispersed across six operational lines arrayed in a circle-radial topology. Two more lines and 44 stations are currently under construction, in addition to ongoing extension works on existing lines. In total, this will schedule the network to double in length to about 460 km (290 mi) by 2040. Further studies are ongoing on potential new alignments and lines, as well as infill stations in the Land Transport Authority's (LTA) Land Transport Masterplan 2040. The island-wide heavy rail network interchanges with a series of automated guideway transit networks localised to select suburban towns — collectively known as the Light Rail Transit (LRT) system — which, along with public buses, complement the mainline by providing a last mile link between MRT stations and HDB public housing estates.