D-class Melbourne tram

D-class
D-class
	D2 5016 at the Elizabeth Street terminus, February 2023
	Refurbished interior with seating
Manufacturer	Siemens
Built at	Uerdingen, Krefeld, Germany
Family name	Combino
Replaced	Most remaining SW5, W6, SW6 and W7 trams (excluding City Circle trams), many Z1 and Z2 trams.
Constructed	2002-2004
Number built	59
Number in service	58 (D1 3536 stored)
Fleet numbers	D1 3501–D1 3538; D2 5001–D2 5021;
Capacity	D1: 32/90; D2: 56/130; (seated/standing)
Depots	Brunswick; Malvern;
Specifications
Train length	D1: 20.04 m (65 ft 9 in); D2: 29.85 m (97 ft 11 in);
Width	2.65 m (8 ft 8 in)
Height	D1: 3.65 m (12 ft 0 in); D2: 3.53 m (11 ft 7 in);
Doors	2 single, 4 (D1) or 6 (D2) double
Articulated sections	D1: 3 (2 articulations); D2: 5 (4 articulations);
Wheel diameter	600–520 mm (24–20 in) (new–worn)
Wheelbase	1.8 m (5 ft 11 in)
Maximum speed	70 km/h (43 mph)
Weight	D1: 25.8 t (25.4 long tons; 28.4 short tons); D2: 35.3 t (34.7 long tons; 38.9 short tons);
Traction motors	4 × Siemens 1TB1422-0GA03 100 kW (130 hp)
Power output	400 kW (536 hp)
Acceleration	1.3 m/s2 (2.9 mph/s)
Deceleration	1.61 m/s2 (3.6 mph/s) (Max D1 operational); 1.47 m/s2 (3.3 mph/s) (Max D2 operational); 1.35 m/s2 (3.0 mph/s) (Average D1 operational); 1.25 m/s2 (2.8 mph/s) (Average D2 operational); 3.4 m/s2 (7.6 mph/s) (Max D1 emergency); 3.3 m/s2 (7.4 mph/s) (Max D2 emergency); 2.74 m/s2 (6.1 mph/s) (Average D2 emergency);
Electric systems	600 V DC (nominal) from overhead catenary
Current collection	Pantograph
UIC classification	D1: Bo′+Bo′; D2: Bo′+2′+Bo′;
Bogies	SF 30 C TFW (powered), SF 30 C LFW (D2 trailer)
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge

The D-class Melbourne tram is a fleet of low-floor Combino trams that operate on the Melbourne tram network. They were built by Siemens in Uerdingen, Krefeld, Germany, and are divided into two classes: the three section D1-class which was introduced between 2002 and 2004, and the five section D2-class which was introduced in 2004. The D-class was procured by M>Tram and have been operated by Yarra Trams since they took control of the entire tram network in April 2004.