Kawasaki Heavy Industries C151 (KHI)

The Kawasaki Heavy Industries C151 trains are Singapore's first generation of rolling stock.

It is the oldest rolling stock in SMRT's train fleet and have been in passenger service since 7 November 1987. The trains are housed in Bishan, Ulu Pandan, Changi and Tuas Depots.

There are currently 66 trains of six cars each. All of the 396 KHI cars are built from 1986 to 1989 with no comparable differences by the four manufacturers in the consortium led by Kawasaki Heavy Industries.

These trains also underwent a Mid-Life Refurbishment programme between 2006 to 2008.


At a Glance

Kawasaki Heavy Industries C151

North-South Line

East-West Line

Built 1986 - 1989

Mid-Life Refurbished 2006 - 2008

Decommissioning from 2020

66 trains of 6 cars each, numbered 001/002 to 131/132

Trains maintained by SMRT Trains


Contract 151 for the design and building of the trains was awarded to a consortium led by Kawasaki Heavy Industries, consisting of Kawasaki itself, Nippon Sharyo, Tokyu Car Corp and Kinki Sharyo.

The first KHI train was delivered to Bishan Depot on 27 November 1986

It is worth noting that these C151 trains are the pioneer batch of mass transit trains in Singapore, which ran on the very first rapid transit line in Singapore. They entered service alongside the initial opening of the Mass Rapid Transit system on 7 November 1987.

Refurbishment and Upgrading

Between 2006 and 2008, these trains underwent a 2.5 year Mid-Life Refurbishment Programme which was done by Mitsui & Co, RM Transit Technology, Lexbuild and Rotem Company, at a total cost of S$142.7 million. By 2 January 2009, all of these trains have been refurbished.

From 2010 to 2013, these trains were put through an Upgrading and Improvement programme. Trains that were upgraded have new floorings, a large wheelchair symbol at the wheelchair bay as well as have its Builder and Refurbishment Plates fitted up.

Between 2014 and 2015, the KHI trains were upgraded to be equipped with Thales SelTrac Communications-Based Train Control (CBTC) signalling system under the Re-Signalling Project. With the upgrade, two seats from both ends of the train are replaced with a signalling box, housing the new signalling equipments.

It was announced on 4 July 2013 that new IGBT-VVVF Permanent Magnet Synchronous Motors (PMSM) from Toshiba will replace the original 4-Quadrant/GTO Chopper control from Mitsubishi Electric. With the new motors, power consumption is expected to be cut by 30%, operating noise levels will also be reduced by up to 12dB and the operating efficiency of the trains will be increased. Two trains undergone tests with the new motors between February and April 2015 in the depot, and on the main line in June and July 2015. The two trains entered revenue service on 30 July 2015 with the new motors. The contract for the full-fleet rollout was then awarded in January 2016 and the PMSM system will be rolled out to the other 64 KHI trains by December 2019. As of September 2017, only six trains have been retrofitted with the new Toshiba motors.

Replacement of KHI trains

Plans for the End-of-Life upgrade for the KHI trains were put on hold on 26 October 2016 as the Land Transport Authority will be replacing all 66 KHI trains. Contract R151 for 66 replacement trains was awarded to Bombardier on 25 July 2018, and the new trains will be put into service from 2022.

The Land Transport Authority commenced the decommissioning of the KHI trains on 22 June 2020, starting with Train 045/046. LTA is currently in discussion with several public and private organisations to retain a number of trains for educational and training purposes, giving decommissioned trains a new lease of life. These trains may also be converted into recreational spaces. Under contract R151D, the Land Transport Authority will hand over the remaining decommissioned trains to Toyotron Pte Ltd for dismantling, scrapping and disposal services.





The KHI trains carry a dark exterior livery: a dark background, with a red band down the middle, and a grey band at the bottom.

Before the mid-life refurbishment, the train were first unpainted, then painted in white with a red band down the middle of the train body.

The train numbers are displayed on a roller-blind display at the top of the right windscreen.


There are three colour schemes in the train cars, with each colour applied to two cars of the train.

From the train ends to the middle cars, they are coloured red, blue, and green.


High Capacity Trains

High Capacity KHI Trains

Two rows of seats from the middle of each car are replaced with a standing area in all KHI trains to provide more standing space.

Wheelchair Bay

Wheelchair Bay

Two wheelchair bays are located in the middle of every KHI train at doors 12 and 13.

The Emergency Communication Button is positioned lower, enabling wheelchair-bound passengers to gain access to the feature.

Gangway Lights

Gangway Lights

Gangway lights are installed to illuminate the gangway area of the train cars.

Overhead Hand Grips

Overhead Hand Grips

Three rows of hand grips are positioned along the aisles of the train cabins to provide standing passengers with increased support.

Grab-Handles at Doorways

Grab-Handles at Doorways

Provide support for passengers boarding or alighting the trains and for passengers standing near the doors.

Door Closing Indicator

Door Closing Indicator

Red LED lights that are positioned above each door will light up when the doors are closing.



STARiS is installed in all KHI trains.

It provides commuters with their route information throughout their journey, and indicates which side the doors will open.

Read more >

Builder Plate

Builder Plate

The plate lists the companies involved in the manufacture of the train, and also the year it was built and refurbished.

It is located at both ends of the train.

Emergency Exits

Emergency Exits

Emergency exits are located at both ends of the train.

The emergency exit ramp will be deployed in an emergency.

Emergency Communication Button

Emergency Communication Button

Emergency Communication Buttons are located at the side of the train doors to contact the train staff in an emergency.


Modification of Handrails

Modification of Handrails

Handrails were modified as a trial by LTA to encourage more commuters to move towards the centre of the car.

This programme was experimented in train car 2105.

The trial was successful and it has been rolled out to the rest of the KHI cars.

Technical Specifications


DT: Driving Trailer (unpowered); M1/M2: Motor car

Kawasaki Heavy Industries
Nippon Sharyo
Tokyu Car Corporation
Kinki Sharyo
Number Built
396 cars (66 trains)
Train Numbers
001/002 - 131/132
Car Body Construction
Aluminium-alloy double-skinned construction
Traction Control
4-Quadrant/GTO Chopper control (Mitsubishi Electric)
IGBT-VVVF (Toshiba PMSM) (6 trains)
Line Voltage
750V DC (nominal) from third rail
Standard gauge (1435mm)
Maximum Speed
90km/h (design)
80km/h (service)
Train Length
138m (6 cars)
Car Length
23.65m (DT)
22.80m (M1/M2)
Train Weight
217t (tare condition/unladen)
286t (fully laden)
1.45m wide, 8 per car
Seating Capacity
208 seats