Scomi SUTRA

Scomi Urban Transit Rail Application
4-car SUTRA trainsets used by KL Monorail
The interior of the KL Monorail 2-car train
In service	2012–
Manufacturer	Scomi Rail
Built at	Rawang Industrial Park
Formation	2/4/6/8 cars per set
Capacity	20 seats per car 139 standing per car
Operator(s)	Mumbai Monorail KL Monorail
Specifications
Train length	2 car: 23.7 m 4 car: 45.4 m 6 car: 67.0 m
Car length	11.2 m (end cars) 9.5 m (intermediate cars)
Width	3.08 m (incl. doors)
Height	4.72 m
Floor height	2.10 m
Doors	2 pairs per side per car
Wheel diameter	940 mm
Maximum speed	90 km/h
Weight	15 tonnes per car
Acceleration	1.1 m / s2
Deceleration	1.1 m / s2 (service) 1.3 m / s2 (emergency)
Power supply	750 VDC power line
Braking system(s)	Regenerative brake Electro-pneumatic brake
Track gauge	800 mm guide beam

SUTRA, abbreviation for Scomi Urban Transit Rail Application, is a monorail electrical multiple unit (EMU) type train system designed by Malaysian rail company Scomi Rail. The design is currently the main product offering of Scomi Rail, which has won several contracts with the design, with the first customer being the Mumbai Monorail project.

In late 2006, Scomi Rail decided to develop its own next generation monorail after gaining experience from the manufacture of the KL Monorail system. Within twelve months after commencing engineering design, on 26 November 2007, the SUTRA was unveiled by the then Malaysian deputy prime minister Datuk Seri Najib Tun Razak, who described the launch as "a significant milestone".

The total investment expenditure spent by Scomi Rail for the SUTRA monorail was about RM35mil including for research, development and factory expansion.

The SUTRA complies with 50 international standards comprising safety, quality assurance, vehicle certification, reliability, availability and maintainability.

Compared to the previous design used in the KL Monorail, the SUTRA has improved features such as a composite body and interior panel, new bogie system and structure, mass transit components drive train, improved propulsion and control system, and regenerative and pneumatic brake system. The SUTRA is also more energy-efficient due to an improved direct-drive propulsion system and lower vehicle weight. The SUTRA also has a smaller turning radius of 50m and can also handle gradients on a slope of up to 6 degrees. The SUTRA also features couplings for up to eight cars that have a capacity of 1,050 passengers.

The SUTRA is a highly customisable design, and is designed to accommodate 2 to 8 cars per set, with capacity ranging from 6,400 pphpd in the 4-car KL Monorail to 36,000 in the 5/6-car Line 17 (São Paulo Metro) and Manaus Monorail.