MR-90

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the Deux-Montagnes line on December 31, 2020 in favour of the Réseau express métropolitain project, the MR-90 fleet was withdrawn from service.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. In 2022, exo announced that the MR-90 coaches would be scrapped. 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.