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Siemens powers driverless train line in Singapore

25 Mar 2014

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SBS Transit Limited, a public transport operator in Singapore, has started passenger service on the driverless Downtown Line 1 (DTL1), spanning 42km with 34 stations, and will occur in three phases.

Initial service has commenced for the first phase, a 4km section with six stations and six trains. The DLT1 metro line is designed to transport up to 500,000 passengers.

Siemens supplied the automatic train control system, dubbed Trainguard Sirius CBTC, which uses communication based train control technology to permit driverless operation and Trackguard Westrace MK2 electronic interlockings of latest generation.

The operations control system Controlguide Rail 9000 (ATS – Automatic Train Supervision) is used for automatic train monitoring. Trackside and onboard equipment were also installed for fully automated train operation in unattended mode.

Siemens equipped the traction power supply system for 750VDC for the electrification of the entire line. Power is supplied from the 66kV AC utility network and stepped down to 22kV AC to feed a medium-voltage ring that supplies to the traction substations. The stations and the depot, meanwhile, are powered with 8DA10 switchgears.

The traction substations converts the 22 kV AC into 750 VDC using Sitras REC and distributes the electrical energy to the third rail through Sitras DSG Switchgear. The electrical energy recovered during the braking of the trains is fed back into the medium-voltage power system via Sitras TCI Inverters and thus made available to all other electrical loads.

The current metro network in Singapore is about 180km long and is used by some 2.5 million commuters every day. The Downtown Line connects the residential areas in the northwest and east to Singapore's city centre.

The first section of the line that has now opened in the city centre runs from the financial district to the Chinatown shopping district. The second section, which spans 16km in twelve stations, will link the northwestern districts of Singapore to the central business district in 2016. The 21km connection of the eastern part is scheduled for completion in 2017.

As part of the Land Transport Masterplan 2013 theme of providing commuters with more connections to the places where they live, work and play, the Land Transport Authority (LTA) will be constructing two new rail lines, and extending three existing lines to improve the connectivity, accessibility and coverage of Singapore's rail network. With a more extensive rail network, commuters will have more choices for travel via public transport.

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