| MR-90 | |
| Imagealt: | MR-90 |
| Service: | 1995–2020 |
| Manufacturer: | Bombardier Transportation |
| Factory: | La Pocatière |
| Replaced: | CN Boxcab Electric, CN electric multiple unit |
| Yearconstruction: | 1994 - 1995 |
| Yearservice: | 1995 |
| Yearscrapped: | 2022 - 2023 |
| Numberbuilt: | 58 |
| Numberpreserved: | 2 |
| Numberscrapped: | 56 |
| Fleetnumbers: | Motor: 400-456 (even) Trailer: 401-449 (odd) Trailer with cab: 481-487 (odd) |
| Operator: | Exo |
| Depots: | St-Eustache |
| Lines: | Deux-Montagnes (Exo) |
| Trainlength: | One married pair, 52.02m (170.67feet) over couplers (length over coupler pulling faces) Maximum 5 married pairs, 130.05m (426.67feet) over couplers |
| Carlength: | 26.01m (85.33feet) over Type H coupler and to half way of drawbar |
| Wheeldiameter: | 8640NaN0 |
| Wheelbase: | 26420NaN0 (truck) 18136mm truck centers |
| Maxspeed: | 120km/h (design) 109km/h (service) |
| Weight: | Motor: 57169kg (126,036lb) Trailer: 44465kg (98,029lb) Trailer with cab: 45372kg (100,028lb) |
| Poweroutput: | 1350kW |
| Tractiveeffort: | 100kN @48km/h[1] |
| Acceleration: | 2.4km/h/s |
| Deceleration: | 3.2km/h/s emergency: 4km/h/s |
| Aux: | 700 V AC / one phase / 60 Hz |
| Powersupply: | 480 V AC / three phase 60 Hz 120 V AC / 60 Hz 37.5 V DC Battery voltage |
| Electricsystem: | 25 kV AC 60 Hz catenary |
| Collectionmethod: | Pantograph |
| Traction Motors: | Siemens AC (4 × 284kW / motor car) |
| Bogies: | 2 |
| Brakes: | Air |
The MR-90 was a class of single-level electric multiple unit (EMU) railcars built in 1994-1995 by Bombardier Transportation for the Société de Transport de la Communauté Urbaine de Montreal (STCUM) and last operated by Exo. These cars were ordered when the Deux-Montagnes line was completely rebuilt from 1993 to 1995 and all the equipment and infrastructure was replaced.
With the closure of the Deux-Montagnes line on December 31, 2020 in favour of the Réseau express métropolitain project, the MR-90 fleet was withdrawn from service. They were subsequently transported to Exo's Pointe-Saint-Charles maintenance center for storage. A request for information has been issued to determine the fate of the cars.[2] In 2022, exo announced that the MR-90 coaches would be scrapped.[3] A single married pair, composed of Motor car number 400 and trailer with cab number 485, was set aside for preservation at the Canadian Railway Museum in Saint-Constant.[4]