Montreal inaugurated a new branch of the Réseau express métropolitain (REM) light-rail system on May 15, 2026 [1].

This expansion represents a significant shift in Canadian urban transit by establishing Montreal as a primary hub for aerial rail infrastructure. The project aims to reduce traffic congestion and improve connectivity across the metropolitan area by leveraging elevated tracks to bypass ground-level obstacles.

The new branch positions the REM as the second-longest aerial rail network in Canada [2]. It follows only Vancouver's SkyTrain in terms of total aerial track length [2]. This development marks a milestone in the city's long-term transportation strategy to modernize public transit through automated light-rail technology.

Officials said the inauguration focused on the system's ability to bridge disparate sections of the city more efficiently. The network's design allows for higher speeds and more reliable scheduling than traditional bus or street-level rail options, providing a scalable model for future urban growth in Quebec.

By integrating this new branch, the city expands its capacity to move thousands of commuters daily. The aerial nature of the network minimizes the need for land expropriation and avoids the disruption of existing road networks during operation [2].

“Montreal inaugurated a new branch of the Réseau express métropolitain (REM) light-rail system on May 15, 2026”

The growth of the REM indicates a strategic preference for aerial rail over subterranean or surface-level expansions in Montreal. By becoming the second-longest aerial network in Canada, the city is aligning its infrastructure with the high-capacity, grade-separated models used in Vancouver, likely to facilitate faster transit times and lower operational interference as the population grows.