Bombardier CR4000

Bombardier CR4000
CR4000 2544 in current livery in December 2009
The interior of a refurbished CR4000
In service	10 May 2000 – present
Manufacturer	Bombardier Transportation
Built at	Vienna, Austria
Family name	Flexity Swift
Constructed	1998–2000
Refurbished	2008–2009, 2015
Number built	24
Number in service	23
Fleet numbers	2530–2553
Capacity	70 seated, 138 standing per tram
Operators	Tramlink
Depots	Therapia Lane
Specifications
Car body construction	Aluminium
Train length	30.1 m (98 ft 9 in)
Width	2.65 m (8 ft 8 in)
Height	3.67 m (12 ft 0 in)
Floor height	350–400 mm (13.8–15.7 in)
Platform height	350 mm (13.8 in)
Entry	350 mm (13.8 in)
Doors	8 plug doors per set
Articulated sections	1
Wheel diameter	630–550 mm (25–22 in) (new–worn)
Wheelbase	1,800 mm (5 ft 11 in) (motorised) 1,900 mm (6 ft 3 in) (trailer)
Maximum speed	50 mph (80 km/h)
Weight	36.3 tonnes (35.7 long tons; 40.0 short tons) per tram
Traction system	Kiepe Electric DPU 251[1] GTO–VVVF
Traction motors	4 × Alstom 4 LXA 1442 120 kW (161 hp) asynchronous 3-phase AC
Power output	480 kW (644 hp)
Transmission	7.225 : 1 gear ratio
Acceleration	1.2 m/s2 (2.7 mph/s)
Deceleration	1.3 m/s2 (2.9 mph/s) (service) 2.73 m/s2 (6.1 mph/s) (emergency)
Electric system(s)	750 V DC overhead catenary
Current collector(s)	Pantograph
UIC classification	Bo′+2′+Bo′
Track gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge

The Bombardier CR4000 is a 76% low floor model of the Bombardier Flexity Swift series of tram operated by Tramlink in London. They are based on and very similar in appearance to the K4000 used on the low-platform routes of the Cologne Stadtbahn network. Built between 1998 and 2000, the trams entered service in the spring of 2000.^[2]