Invensys Rail Dimetronic was hired for to supply, install and commission of the signalling, installation of platform doors and the SIRIUS CBTC technology for the "Downtown Line" of Singapore Metro.

This new line is part of the major mass transit project to support the Land Transport Masterplan for 's transport system.  Part of the exciting vision of the Masterplan is to double the network of the Rapid Transit System from today's 138km to 278km by 2020.  By then commuters will be within five minutes' walk (or on average 400 metres) to an RTS station within the Central area.

The Downtown Line will be built in three stages with Stage 1 to be completed by 2013, Stage 2 by 2015 and Stage 3 in 2016. When fully completed, the Downtown Line will enhance connectivity of the Rapid Transit System network and facilitate direct travel from the north-western and eastern areas of the island to the Central Business District and the Marina Bay.