The Quebec government announced plans to overhaul Highway 10 between Brossard and Carignan, adding dedicated lanes for buses and carpool vehicles and modernizing older infrastructure. The move aims to improve access to the REM light‑rail system for residents of Montreal’s South Shore.

Highway 10 serves as a primary commuter corridor linking the South Shore municipalities with downtown Montreal. By providing reserved lanes, the province expects to streamline traffic flow for high‑occupancy vehicles and public transit, facilitating smoother connections to REM stations.

The planned upgrades will address aging sections of the highway, enhancing safety and reliability while supporting the region’s growing transportation demand. The focus on bus and carpool lanes reflects a broader strategy to encourage shared‑ride options and reduce single‑occupancy traffic.

The REM network, a regional light‑rail system, currently connects several South Shore communities to the city core. Improving highway access to the REM is intended to make the rail service more attractive to commuters who rely on road travel to reach the train lines.

The announcement was made on June 30, 2026, and outlines the province’s commitment to integrating road and rail infrastructure on the South Shore. Details on project timelines, funding, and construction phases were not disclosed in the release.

Officials indicated that the overhaul will be part of a larger effort to modernize transportation corridors across Quebec, aligning road improvements with public transit goals. The province expects the changes to contribute to a more efficient commuting experience for South Shore residents.