| 71-931 | |
|---|---|
 Vityaz-M in Moscow | |
 Interior of "Vityaz-M" | |
| Manufacturer | PK Transportnye Sistemy  Russia Tverskoy Vagonostroitelniy Zavod Russia |
| Constructed | 2014-OT |
| Number built | 434 |
| Capacity | 71-931: 53 seats, 320 standing 71-931M: 60/64 seats, 265 standing (at 8 p/m2) |
| Specifications | |
| Train length | 71-931: 27,000 mm (88 ft 7 in) 71-931M: 27,500 mm (90 ft 3 in) |
| Width | 2,500 mm (8 ft 2 in) |
| Height | 3,500 mm (11 ft 6 in) |
| Doors | 6 |
| Articulated sections | 3 |
| Maximum speed | 75 |
| Weight | 71-931: 37 t |
| Power output | 6x72 kW |
| Power supply | 550 V |
| Current collector(s) | Pantograph |
| AAR wheel arrangement | Bo-Bo-Bo |
| Bogies | 3 |
| Braking system(s) | Electric, disc, magnetic |
| Track gauge | 1,524 mm (5 ft) |
71-931 "Vityaz" (Russian: "Витязь", lit. 'Knight') is a Russian three-unit six-axle 100% low-floor tram car created by LLC "PK Transportnye Sistemy" (transl. "Transportation Systems", PK TS) and manufactured in cooperation by PK TS and Transmashholding at the facilities of the Tver Carriage Works. Currently exists in two versions: the basic model Vityaz and 71-931M Vityaz-M modification with modified front and rear mask, different interior and Russian-designed traction motors. In operation in St. Petersburg, Krasnodar and Moscow's Bauman, Oktyabrskoye and Rusakov depots.