The Alstom Metropolis C830 trains are the first generation of rolling stock for the Circle Line. It is also the second generation of Communication-Based Train Control (CBTC) rolling stock in Singapore.
There are 40 trains of three cars each and have been in passenger service since 28 May 2009. The trains are housed in Kim Chuan Depot.
The automated CBTC system version, previously known as the "moving block system", do not require traditional "fixed-block track circuits" for determining the train position. Instead, they rely on "continuous two-way digital communication" between each controlled train and the control centre.
Alstom Metropolis C830
Built 2006 - 2008
40 trains of 3 cars each, numbered 801 to 840
Contract 830 for the design and building of the trains was awarded to french company Alstom Transport.
The C830 trains are similar to the Alstom Metropolis C751A counterparts on the North East Line, utilising Alstom's Urbalis 300 CBTC system. However, the C830 trains receive power from the third rail instead of the overhead catenary. The LCD screens found on board the C751A trains were also depreciated in the C830 trains. The trains feature an additional viewing space on the detrainment door at both ends of the train, allowing passengers a view of the tunnel while on board.
40 trains of three cars each were bought by the Land Transport Authority for the five stages of the Circle Line, which commenced service on 28 May 2009 with the Circle Line Stage 3.
The exterior colour of the train is black and has a red strip through the whole train. The design of the train is also curved, giving it a more streamlined look.
A yellow LED display at the top left corner of the train's head is used to indicate the train numbers.
Both ends of the train feature a viewing space and an emergency exit.
The viewing space allows passengers to have a view of the tunnel through the windscreen.
The emergency exit ramp will be deployed in an emergency.
Two wheelchair bays are located in the middle car of every C830 train at doors 5 and 8.
Provide support for passengers boarding or alighting the trains and for passengers standing near the doors.
Yellow alert lights that are positioned above each door will light up when the doors are closing.
The Train Travel Information System shows useful travel information to passengers, such as the current and next train stations which the train will call at, the terminal station and other useful travel messages.
Variations of the hand grips were found in selected C830 train cars.
These hand grips were removed when the handrails were modified.
Mc: Motor car; Tc: Trailer car (unpowered)