The Réseau express métropolitain began running its first automated low‑speed test trains on the future branch that will serve Montreal‑Trudeau Airport during the week of August 13, 2026. The trial runs are taking place on the planned track that will connect the airport to the broader REM network, which is being built around the city.
The automated tests are part of a series of steps required to finish the airport segment of the system. Engineers are using the low‑speed runs to verify the performance of the driverless technology, assess signaling equipment and confirm that track infrastructure meets design specifications. The activity follows months of construction on the route, which includes tunnels, viaducts and stations that will link the airport with existing REM lines.
Completion of the airport branch is scheduled for the end of 2027, extending the rapid‑transit system’s reach to a major transportation hub. When the line opens, it will provide a direct, high‑frequency connection between downtown Montreal and the airport, complementing other planned extensions that are still under development.
The REM project, a large‑scale rapid‑transit system, is being built in phases across the Greater Montreal area. The airport extension represents the next major milestone after the initial network sections have entered service. The automated test runs signal that the project is moving from construction toward operational readiness, with further testing and system integration expected in the months ahead.
Authorities have indicated that the successful completion of these tests will allow the project to stay on track for its 2027 deadline, after which passengers will be able to travel to the airport without using a conventional car or taxi service.