Siemens–Duewag U2
| Siemens-Duewag U2 | |
|---|---|
A Siemens U2 in service in Mendoza | |
A diagram of the U2 vehicles | |
| Manufacturers | Siemens Duewag |
| Built at | Düsseldorf, West Germany (Duewag) Florin, California (Siemens California) |
| Constructed | 1968–1990 |
| Entered service | 1968 (Frankfurt U-Bahn) 1978 (Edmonton LRT) 1981 (Calgary CTrain) 1981 (San Diego MTS) 2012 (Mendoza Línea Verde) |
| Retired | 2015 (San Diego) 2016 (Frankfurt) |
| Number built | 297 |
| Number in service | 123 (Calgary: 39, Edmonton: 37, Sacramento: 36, Mendoza: 11) |
| Number preserved | 11 (US museums: 6, Frankfurt: 3, San Diego: 1) |
| Successor | Siemens SD-160, Siemens S70 and S200 |
| Capacity | 264 people (including standees) |
| Operators | Frankfurt U-Bahn (formerly) Metrotranvia Mendoza Edmonton LRT CTrain San Diego Trolley (formerly) SacRT light rail |
| Specifications | |
| Car body construction | Fibreglass (cabs), Steel (body) |
| Car length | 24 m (78 ft 8+7⁄8 in) |
| Width | 2,562 mm (8 ft 4+7⁄8 in) |
| Height | 3,780 mm (12 ft 4+7⁄8 in) |
| Doors | 8 |
| Articulated sections | 1 |
| Maximum speed | 80 km/h (50 mph) |
| Weight | 35,000 kg (77,000 lb) |
| Power output | 300 kW (400 hp) |
| Electric system | 600-750 V DC OHLE |
| Current collection | Pantograph |
| UIC classification | Bo’2Bo’ |
| AAR wheel arrangement | B-2-B |
| Braking system | Dynamic Air |
| Safety system | CBTC |
| Coupling system | Scharfenberg |
| Multiple working | up to 5 cars |
| Seating | upholstered neoprene foam |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge |
The Siemens–Duewag U2 is a type of light rail vehicle (LRV), built by consortium of Siemens, Duewag and Wegmann & Co built between 1968 and 1990.
The design was based on the prototype U1 tram built in 1965 for the Frankfurt U-Bahn. The U2 was also designed for and used by the Frankfurt U-Bahn. The name is derived from the class identifier given to the cars in the Frankfurt.
The U2 was later exported to North America and adapted for use on light rail systems in Edmonton, Calgary, and San Diego, during a period in which few purpose-built LRVs were being manufactured. The U2 cars were retired from the San Diego Metropolitan Transit System (MTS) and shipped to Argentina. The first batch arrived in early 2011, with full service beginning in October 2012. More than 18 cars were originally sent to Mendoza. While some were used for spare parts, others were refurbished for service. In 2022, San Diego sent additional Siemens SD-100 cars to supplement the fleet. The system acts as a "Green Line" (Línea Verde), running along repurposed, existing rail infrastructure.