Accordingly, three railway lines have been proposed for the project; a 33km-long railway line from Ragama to Kirulapone via Kadawata and Colombo Fort, and the Green Route from Kelaniya to Moratuwa via Borella, Nugegoda and Piliyandala.

Another railway line by the name Blue Route has also been planned to be established from Hunupitiya to Kottawa through Angoda and Koswatte.The Cabinet of Ministers has approved the proposal to call for proposals for the construction of 3 Rail Transport ways from Ragama to Colombo, Kelaniya to Moratuwa, and from Hunupitiya to Kottawa.