The Mass Rapid Transport(MRT) system is the largest,most complex public works project in the history of singapore,stretching 109km over 51 stations.In 1967,a state and City Planning(SCP)project was undertaken to examine urban planning and public transport,After four-year study.it revealed that there was a need for a rail transit system.A three-phase study was carried out between 1972 and 1980 to address these issues in detail.