Hitachi small-type monorail (Sentosa Express)

The Hitachi small-type monorail is a straddle-type monorail built by Hitachi Ltd. for the use on the Sentosa Express. These trains are part of Hitachi line of ALWEG based monorail. The trains were part of a project to replace Sentosa's previous aging monorail system. The trains are fully air-conditioned.

Hitachi small-type monorail
Red and green Sentosa Express monorail trains outside Vivocity.
Interior of the Sentosa Express Train
In service15 January 2007 – present
ManufacturerHitachi
Family nameHitachi Monorail
ReplacedSentosa Monorail
Constructed2005 – 2009, 2017
Entered service2007
Number built14 (7 train sets)
Number in service14 (7 train sets)
Formation2 cars per trainset
Mc1-Tc2
Capacity32 seated; 152 standing
Operator(s)Sentosa Development Corporation
Depot(s)Beach Station Depot
Line(s) servedSentosa Express
Specifications
Car body constructionWelded Aluminium
Car length12.5 m (41 ft 1⁄8 in)
Width2.7 m (8 ft 10 1⁄4 in)
Height2.0 m (6 ft 6 3⁄4 in)
Doors2 per car
Maximum speed80 km/h (50 mph) (design)
50 km/h (31 mph) (service)
Traction systemIGBT-VVVF (Hitachi)
Electric system(s)750 V DC third rail
Safety system(s)Defunct: Hitachi Fixed Block Digital ATP for GOA 1
Current: Hitachi Moving Block Wireless CBTC ATC with subsystems of ATO GOA 3 (DTO), ATP, ATS, CBI
Track gaugeStraddle-beam

Exterior design

Each train has an individual colour scheme - green, orange, blue, purple, pink, yellow and red. All trains are for passenger service, except for the yellow maintenance train.

The straddle-type small monorail is small in size but able to navigate through tight turns.

Interior design
  • The colour scheme of the interior is green and orange.
  • Foldable seats that can make room for more standing space during periods of high usage.
  • Passenger Information Display Systems in the form of LED displays are installed above each door in all passenger service trains and provides commuters with their route information throughout their journey.
  • Two wheelchair bays are located in each car of every Sentosa Express train.

Operations and safety systems

Trains and platform screen doors were previously manually operated by train attendants; the trains utilised Automatic Train Protection to ensure trains keep a safe distance between each other and Automatic Train Supervisory to provide the route setting for the train to travel.

With the upgrading to Communications Based Train Control (CBTC) in 2017, trains and platform screen doors are now operated automatically.

Trains cruise at 15 to 50 km/h (9.3 to 31.1 mph) but is designed to speed up to 80 km/h (50 mph).

Train formation

The configuration of the Hitachi small-type monorail in revenue service is Mc1-Tc2

Cars of Hitachi small-type monorail
car type Driver Cab Motor Collector Shoe car length Wheelchair Space
mm ft in
Mc1✓✓✓ 23,830 78 ft 2.2 in✓
Tc2'✓✗✓ 22,800 74 ft 9.6 in✓

See also
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