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 RTD #101, the first SD-100 built, at I-25 & Broadway station in 2012 | |
 Diagram of the Siemens SD100 | |
| In service | 1994–present |
| Manufacturer | Siemens Mobility |
| Built at | Florin, California |
| Constructed | 1992–2013 |
| Entered service | 1995–present |
| Number built | 431 |
| Successor | |
| Capacity |
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| Operators |
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| Specifications | |
| Car length | 24.799 m (81 ft 4+3⁄8 in) |
| Width | 2,652 mm (8 ft 8+3⁄8 in) |
| Height | 3,780 mm (12 ft 4+7⁄8 in) |
| Floor height | 991 mm (3 ft 3 in) |
| Doors | 8 (4 per side) |
| Articulated sections | 1 |
| Maximum speed | 80 km/h (50 mph) |
| Weight | 40,370 kg (89,000 lb) |
| Traction motors | 2 × 200 hp (150 kW) 4 × 194 hp (145 kW) |
| Acceleration | 1.07 m/s2 (2.39 mph/s) |
| Deceleration | 1.31 m/s2 (2.93 mph/s) (service) 2.63 m/s2 (5.88 mph/s) (emergency) |
| HVAC | Roof-mounted air conditioning |
| Electric system(s) | 600-750 V DC overhead lines |
| Current collector(s) | Faiveley pantograph |
| UIC classification | Bo’2Bo’ |
| AAR wheel arrangement | B-2-B |
| Coupling system | Scharfenberg |
| Multiple working | up to five cars |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge |
| Notes/references | |
| [1] | |
The Siemens SD-100 and SD-160 are two related types of high-floor light rail vehicles (LRV), manufactured by Siemens Mobility for the North American market. A total of 431 vehicles were built by Siemens in Florin, California from 1992 to 2013.
The SD-100 began production in 1992, and is equipped with direct current traction motors and folding doors. It was succeeded in 2001 by the revised SD-160, which is equipped with alternating current motors and plug doors. The first orders for the SD-160 were placed in 2001, and production continued until 2013.
A related design is the SD-400/SD-460 high-floor light rail vehicle, which was initially built by a Siemens–Duewag joint venture. Siemens purchased Duewag in 1999, and assembled the SD-460 model alongside the SD-100/SD-160 in Florin, California.
The SD-100, SD-160, SD-400, and SD-460 were succeeded in the 2010s by newer LRV designs from Siemens, including the low-floor S700 and S70 and the high-floor S200. As of 2024[update], most SD-100 and SD-160 vehicles remain in service with their original operators.