Alstom Metropolis C830C

The **Alstom Metropolis C830C**, together with the Alstom Metropolis C751C are the second generation of communications-based train control (CBTC) rolling stock to be used in Singapore’s Mass Rapid Transit (MRT) lines. 24 trainsets of 3 cars were manufactured by Shanghai Alstom Transport Co Ltd (a joint venture between Alstom and Shanghai Electric), with deliveries from end June 2014.

## Tender

The tender for trains under the contract 830C was opened together with another contract C751C for an additional 18 North East Line trains which closed on 18 July 2011 with 5 bids. The Land Transport Authority has shortlisted all of them and the tender results was published on 1 February 2012.

## Design

The outside of the train is almost the same as the older C830, with slight differences such as a larger SMRT logo and the look of the train inside. The reserved seats are coloured red to make them more obvious. Navy blue and lemon yellow coloured seats are installed in the driving motor cars (end carriages) while the seats in the middle car are khaki. The train's system that allows it to move is louder than the C830's, and is identical the one found on the Amsterdam Metro M5 Series.

Other changes include the inner layer of the doors finished in bluish-grey, a new Visual Passenger Information System, similar to that of its C951/C951A, located above the doors and a new gangway design like the C751C.

## Driverless operation

The C830C runs without a driver, using Communications-based train control (CBTC), which does not require "fixed-block track circuits" to find where the train is on the track. Instead, they use "continuous two-way digital communication" between each controlled train and a control center, which may control an area of a railroad line, a complete line, or a group of lines. It has been found that CBTC systems reduce costs for running the system and allow the system to be controlled more easily.

## Train Formation

The configuration of a C830C in revenue service is Mc1-T-Mc2
|bgcolor="#c0c0f0" colspan="11"|Cars of C830C||||||
| --- | --- | --- | --- | --- | --- | --- |
|style="text-align:left"|**Mc1**|✓|✓|✓||✗|
|style="text-align:left"|**Mc2**|✓|✓|✓||✗|
|style="text-align:left"|**T**|✗|✗|✓||✓|
The car numbers of the trains range from 841x to 864x, where x depends on the carriage type. Individual cars are assigned a 4 digit serial number. A complete three-car trainset consists of one trailer(T) and two driving motor cars(Mc1 & Mc2) permanently coupled together. For example, set 864 consists of carriages 8641, 8642, 8643.

## Infobox (train)

- **name**: Alstom Metropolis C830C
- **imagesize**: 180px
- **caption**: Interior of C830C Driving Trailer.
- **interiorimage**: File:C830C-Interior.JPG
- **interiorcaption**: Interior of C830C.
- **service**: 26 June 2015 - Present
- **manufacturer**: Shanghai Alstom Transport
(Alstom and Shanghai Electric)
- **manufacturer**: Shanghai Alstom Transport
(Alstom and Shanghai Electric)
- **factory**: Shanghai, China
- **factory**: Shanghai, China
- **family**: Alstom Metropolis, Metropolis
- **family**: Alstom Metropolis, Metropolis
- **yearconstruction**: 2014–2015
- **numberbuilt**: 72 Vehicles (24 Trainsets)
- **numberservice**: 72 Vehicles (24 Trainsets)
- **formation**: 3 per trainset
Mc1– T–Mc2
- **formation**: 3 per trainset
Mc1– T–Mc2
- **fleetnumbers**: 841 ~ 864
- **capacity**: 931 passengers
- **capacity**: 931 passengers
- **operator**: SMRT Trains (SMRT Corporation)
- **operator**: SMRT Trains (SMRT Corporation)
- **depots**: Kim Chuan Depot, Kim Chuan
- **depots**: Kim Chuan Depot, Kim Chuan
- **lines**: Circle MRT Line, Circle Line
- **carbody**: Welded Aluminium
- **carbody**: Welded Aluminium
- **carlength**: (Mc)
 (T)
- **carlength**: (Mc)
 (T)
- **doors**: , 8 per car
- **maxspeed**: (design)
 (service)
- **maxspeed**: (design)
 (service)
- **traction**: IGBT–VVVF
(Shanghai Alstom Electrical Equipment OPTONIX)
- **traction**: IGBT–VVVF
(Shanghai Alstom Electrical Equipment OPTONIX)
- **acceleration**: 1.1 m/s2 (3.6 ft/s2)
- **acceleration**: 1.1 m/s2 (3.6 ft/s2)
- **deceleration**: 1.3 m/s2 (4.3 ft/s2) (Emergency)
- **deceleration**: 1.3 m/s2 (4.3 ft/s2) (Emergency)
- **electricsystem**: 750 Volt, V Direct current, DC third rail
- **collectionmethod**: Current collector#Contact shoe, Collector shoe
- **brakes**: Dynamic braking, Regenerative Braking, Electronically controlled pneumatic brakes, Air Brakes
- **brakes**: Dynamic braking, Regenerative Braking, Electronically controlled pneumatic brakes, Air Brakes
- **safety**: Alstom URBALIS 300 Moving Block Communication-based train control, CBTC Automatic Train Control, ATC with subsystems of Automatic Train Operation, ATO GOA 4 (UTO), Automatic train protection, ATP, Iconis ATS and Smartlock Computer-based interlocking, CBI