Fleet Specifications
Below are the technical specifications of the system's four different models of light rail vehicles, as shown on the website of the MTS.
| Specification | U2 Model | SD100 Model | S70 (Full Length) Model | S70 (Streetcar Length) Model |
|---|---|---|---|---|
| Manufacturer | Duewag (with assistance from Siemens) Düsseldorf, West Germany and Sacramento, CA | Siemens Sacramento, CA | Siemens Sacramento, CA | Siemens Sacramento, CA |
| Type | Double-ended articulated car, 6 axle, multiple-unit operation to 5 cars. | Double-ended articulated car, 6 axle, multiple-unit operation to 5 cars. | Double-ended articulated car, 6 axle, multiple-unit operation to 5 cars. | Double-ended articulated car, 6 axle, multiple-unit operation to 5 cars. |
| Fleet Size | 52 | 11 | 40 (Current) + (17 in delivery process) = 57 Future Total | |
| Car Nos. | 1001–1071 | 2001–2052 | 3001–3011 | 4001–4057 |
| First Purchase | 1981 | 1995 | 2005 | 2011 |
| Height (top of car to rail) |
12.4 feet (3,780 mm) | 12.4 feet (3,780 mm) | 12.4 feet (3,780 mm) | 12.4 feet (3,780 mm) |
| Center Aisle Floor Height | 39 inches (991 mm) | 39 inches (991 mm) | 15 inches (381 mm) | 15 inches (381 mm) |
| Width (exterior) | 8.7 feet (2,652 mm) | 8.7 feet (2,652 mm) | 8.7 feet (2,652 mm) | 8.7 feet (2,652 mm) |
| Length (end to end) | 76 feet (23.165 m) | 76.71 feet (23.381 m) | 88.5 feet (26.975 m) | 79.1 feet (24.110 m) |
| Length (over coupler faces) |
79.67 feet (24.283 m) | 81.36 feet (24.799 m) | 90.7 feet (27.645 m) | 81.36 feet (24.799 m) |
| Weight (empty) | 77,161 pounds (35,000 kg) | 89,000 pounds (40,370 kg) | 97,900 pounds (44,407 kg) | 96,500 pounds (43,772 kg) |
| Car Body | Lightweight welded steel, reinforced fiberglass covers articulation and operator cab portion. | Lightweight welded steel. | Low alloy high tensile steel and composite materials. | Low alloy high tensile steel and composite materials. |
| Interior | Upholstered neoprene foam (fire-resistant) seat. Rubber flooring. Simulated wood paneling. | Upholstered neoprene foam (fire-resistant) seat. Rubber flooring. Simulated wood paneling. | Cloth-covered loam seats (fire-resistant), rubber flooring, color-coordinated paneling. | Cloth-covered loam seats (fire-resistant), rubber flooring, color-coordinated paneling. |
| Wheels | Steel-tired with acoustic dampening. | Steel-tired with acoustic dampening. | Steel-tired with acoustic dampening. | Steel-tired with acoustic dampening. |
| Dynamic Braking | Primary method of stopping car. Fades when speed reduced to approx. 1⁄2–3 miles per hour (0.8–4.8 km/h). Friction braking completes the stop. Traction motors operate as generators. Full dynamic braking from 50 to 3 miles per hour (80.5 to 4.8 km/h). | Primary method of stopping car. Fades when speed reduced to approx. 1⁄2–3 miles per hour (0.8–4.8 km/h). Friction braking completes the stop. Traction motors become generators. Full dynamic braking from 55 to 3 miles per hour (88.5 to 4.8 km/h). | Primary method of stopping car. Fades when speed reduced to approx. 1⁄2–3 miles per hour (0.8–4.8 km/h). Friction braking completes the stop. Traction motors become alternators. Full dynamic braking from 55 to 1⁄2 mile per hour (88.5 to 0.8 km/h). | Primary method of stopping car. Fades when speed reduced to approx. 1⁄2–3 miles per hour (0.8–4.8 km/h). Friction braking completes the stop. Traction motors become alternators. Full dynamic braking from 55 to 1⁄2 mile per hour (88.5 to 0.8 km/h). |
| Ventilation (cooling and heating unit on entire fleet) | Dynamic air pressure allowing an exchange rate of not less than 20 times per hour. | Dynamic air pressure allowing an exchange rate of not less than 20 times per hour. | Interior air-conditioning and heating to accommodate local climate. | Interior air-conditioning and heating to accommodate local climate. |
| Speed | 50 miles per hour (80.5 km/h) maximum | 55 miles per hour (88.5 km/h) maximum | 55 miles per hour (88.5 km/h) maximum | 55 miles per hour (88.5 km/h) maximum |
| Overhead Traction Power | 600 V DC | 600 V DC | 600 V DC | 600 V DC |
| Operating Power Requirements | 500 kW to accelerate from a stationary position. 150 kW needed to maintain speed. | 550 kW to accelerate from a stationary position. 165 kW needed to maintain speed. | 130 kW to maintain speed. | 130 kW to maintain speed. |
| Passenger Capacity | Seated: 64 Commute: 96 Special Events: 150 |
Seated: 64 Commute: 96 Special Events: 150 |
Seated: 64 (52 with wheelchairs) Commute: 120 Special Events: 163 |
Seated: 60 (52 with wheelchairs) Commute: 120 Special Events: 195 |
| Doors – 8 per car | Individually activated by passenger pushing button after locks released by operator. One for wheelchair lift; low level stair boarding through double-folding doors. | Opened by operator and/or Individually activated by passenger pushing button after locks released by operator. One for wheelchair lift; low level stair boarding through double-folding doors. | Opened by operator and/or Individually activated by passenger pushing button after locks released by operator. All center sliding doors comply with ADA requirements; low-floor boarding through sliding doors. | Opened by operator and/or Individually activated by passenger pushing button after locks released by operator. All center sliding doors comply with ADA requirements; low-floor boarding through sliding doors. |
| Door Safety System | Includes photo-electric cells and sensitive door leaf edges, weight sensor on lower step. | Photo-electric cells and sensitive door leaf edges. | Photo-electric cells and sensitive door leaf edges. | Photo-electric cells and sensitive door leaf edges. |
| Wheelchair Lifts | Located at one dedicated door at one end of each vehicle. | Located at one dedicated door at one end of each vehicle. | Bridge plates/ramps on 2 designated doors per car side. | Bridge plates/ramps on 2 designated doors per car side. |
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“A city on th’ inconstant billows dancing;
For so appears this fleet majestical.”
—William Shakespeare (1564–1616)