The Alstom Metropolis C830C is the second generation of

communication-based train control Communications-based train control (CBTC) is a railway signaling system that uses telecommunications between the train and track equipment for traffic management and infrastructure control. CBTC allows a train's position to be known more accurat ...

(CBTC)

electric multiple unit An electric multiple unit or EMU is a multiple-unit train consisting of self-propelled carriages using electricity as the motive power. An EMU requires no separate locomotive, as electric traction motors are incorporated within one or a number o ...

rolling stock in operation on the Circle line of Singapore's Mass Rapid Transit (MRT) system. 24 trainsets of three cars were manufactured by Shanghai Alstom Transport Co Ltd (a joint venture between

Alstom Alstom SA () is a French multinational rolling stock manufacturer which operates worldwide in rail transport markets. It is active in the fields of passenger transportation, signaling, and locomotives, producing high-speed, suburban, regional ...

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 five bids. The

Land Transport Authority The Land Transport Authority (LTA) is a Statutory boards of the Singapore Government, statutory board under the Ministry of Transport (Singapore), Ministry of Transport of the Government of Singapore. History Incorporation The Land Transport Au ...

shortlisted all of them, and the tender results were published on 1 February 2012.TENDER INFORMATION
- Land Transport Authority, 1 Feb 2012CONTRACT 751C & 830C
- Land Transport Authority

Design

The body shell is identical to its predecessor, the C830, with slight differences such as a larger SMRT logo up front and a different interior. The reserved seats are colored

red Red is the color at the long wavelength end of the visible spectrum of light, next to orange and opposite violet. It has a dominant wavelength of approximately 625–750 nanometres. It is a primary color in the RGB color model and a seconda ...

to distinguish them from normal seats. dark 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 color khaki (, ) is a light shade of tan (color), tan with a slight yellowish tinge. Khaki has been used by many armies around the world for uniforms and equipment, particularly in arid or desert regions, where it provides camouflage rela ...

. The train is equipped with traction motors louder than its predecessor, identical to those found on the M5 Series of the Amsterdam Metro. Other changes include the inner layer of the doors finished in Bluish-Grey, a new Visual Passenger Information System, similar to that of C951(A), located above the doors and a new gangway design like the C751C. The headlights on C830Cs are also much brighter than those on the C830s.

Features

The C830C features a Visual Passenger Information System, letting commuters know what the current and next station is, as well as green blinking lights which indicate on which side the doors will open when the train reaches the station. There is also a dynamic in-train route display, which provides commuters with their route information throughout their journey, and also indicates which side the doors will open. DRMD panels are installed in these trains, which will be slightly modified in 2026 to include Keppel,

Cantonment A cantonment (, , or ) is a type of military base. In South Asia, a ''cantonment'' refers to a permanent military station (a term from the British Raj). In United States military parlance, a cantonment is, essentially, "a permanent residential ...

and

Prince Edward Road Prince Edward Road East (Traditional Chinese characters, Chinese: 太子道東) and Prince Edward Road West (Traditional Chinese characters, Chinese: 太子道西) are roads in Kowloon, Hong Kong, going in an east-west direction and linking Tai ...

stations on the Circle line Stage 6. At most stations on the Circle line, the train doors open on the right side, but at some stations like

Promenade An esplanade or promenade is a long, open, level area, usually next to a river or large body of water, where people may walk. The historical definition of ''esplanade'' was a large, open, level area outside fortification, fortress or city walls ...

(Towards HarbourFront) and Bayfront (Towards Stadium) as well as the terminal stations like Dhoby Ghaut and Marina Bay, some trains may open their doors on the left.

Driverless operation

The C830C is fully driverless under normal circumstances, using CBTC which do not require traditional "fixed-block track circuits" for determining train position. Instead, they rely on "continuous two-way digital communication" between each controlled train and a wayside control center, which may control an area of a railroad line, a complete line, or a group of lines. Recent studies consistently show that CBTC systems reduce life-cycle costs for the overall rail property and enhance operational flexibility and control.

Operational issues

Trainset 846 suffered from a faulty signalling hardware, resulting in intermittent signaling issues which caused widespread disruptions to the

Circle MRT line , logo = Circle Line logo.svg , logo_width = 250px , image = CC6 Stadium MRT Platforms 20201007 161358.jpg , image_width = 300px , caption ...

for a week in both August and November 2016.

Train formation

The coupling configuration of a C830C in revenue service is Mc1–T–Mc2. 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 by the rail operator

SMRT Trains SMRT Trains Limited is a rail operator in Singapore and a wholly owned subsidiary of SMRT Corporation. After the privatisation of the MRT operations in 1995, it was originally named Singapore MRT Limited. On 31 December 2001, it was renamed SMR ...

. A complete three-car trainset consists of one trailer (T) and two driving motor (Mc) cars permanently coupled together. For example, set 841 consists of carriages 8411, 8412, 8413. * The first digit is always an 8. * The second and third digits identify the set number. * The fourth digit identifies the car number, where the first car has a 1, the second has a 2 and the third has a 3. *

built sets 841 – 864.

References

External links

* {{DEFAULTSORT:Alstom Metropolis and Shanghai Electric C830C Mass Rapid Transit (Singapore) rolling stock Alstom multiple units Train-related introductions in 2015 750 V DC multiple units