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Car Specifics
Manufacturer/Model: Siemens Transportation System U2a
Vehicle type: Double ended Articulated
Developed by: DUEWAG AKTIENGESELLSCHAFT
Date in service:
Number of cars ordered:
Number of cars still in service (to date):
Number of trucks: 3
Number of axles: 6
Car Body
Manufacturer: Siemens Transportation Systems
Underframe: Low Alloy High Tensile Steel
Superstructure: Low Alloy High Tensile Steel
Interior Finish: melanine panels
Floor: Rubber over 16mm thick fire-retardant plywood
Steps: N/A
Doors: Four high level doors per side (electro-mechanically operated)
Windows: tinted, laminated safety glass
Seats: vinyl covered neoprene foam pads
Disabled Access: Car-mounted foldable ramps that cover steps of front
doors allowing access from raised platform at stations.
Suspension, Propulsion, Braking
Trucks/Bogies: Light weight steel, DUEWAG type mono-motor
Suspension: Rubber Chevron Springs (Primary), Coil Spring System
(Secondary); Vertical and lateral oscillations are hydraulically dampened.
Truck centers:
Wheels:
Wheel base:
Track gauge: 4 feet, 8 1/2 inches (1,435 mm) AA Standard
Motors: Dual DC-Chopper, Monomotor; Two Motors per Car
Gear ratio: .
Gearbox: .
Slip/slide protection:
Service Brakes: Pneumatic Friction Brakes
Track Brakes:
Air compressor:
Traction Motor Performance: 2X189 kW one hour rating at 750 VDC
Vehicle Capacity
Seated Load: 64
Design Load: 144
Crush Load: 225
Passenger Comfort
Heating: N/A
Air-conditioning: Two HVAC systems on the roof, total air volume 75
cubic meters/min. One third of the circulated air is fresh.
Vehicle Dimensions
Length over couplers: 79 feet, 8 3/4 inches
Length over body ends: 76 feet, 8 inches
Width: 8 feet, 9 1/2 inches
Height (rail to roof): 12 feet, 4 1/4 inches
Height (rail to floor): 38 3/4 inches
Pantograph operating range:
Empty weight per car: 77,162 lbs.
Interior headroom:
Interior width (articulated section):
Doorway width (minimum):
Doorway height:
Step height (1st step):
Vehicle Performance
Maximum design speed: 50 mph
Maximum operating speed: 50 mph
Maximum grade:
Service acceleration on level tangent track: 2.5 mphps
Service braking on level tangent track: 3.5 mphps
Emergency braking on level tangent track: 6.0 mphps
Minimum horizontal curve radius: 82 feet
Electrical and Control Systems
Power Supply: 750 VDC
Low voltage power supply:
Interior Lights:
Motor Control:
Amperage draw:
Updated May 26, 2000
