Réseau express métropolitain (REM) began running automatic low‑speed test trains on the future line to Montreal‑Trudeau Airport during the week of August 13, 2026. The trial marks the first movement of driverless equipment on the airport branch and is a key step toward completing that segment of the network by the close of 2027.
The test runs involve trains operating at reduced speeds while the system’s signaling, power and control technologies are verified along the newly constructed tracks. Engineers are monitoring performance data to ensure that the automated vehicles meet safety and reliability standards before full service commences.
The airport extension is part of REM’s broader rollout across Greater Montreal. The rapid‑transit system is being built to connect numerous suburbs and downtown cores, and the addition of a direct link to the city’s main airport will provide a seamless rail option for travelers. Completion of the airport segment is slated for the end of 2027, aligning with the overall timeline for the network’s expansion.
Stakeholders view the low‑speed tests as a milestone in the project’s schedule. By confirming that the automated trains can operate correctly on the airport branch, REM moves closer to integrating the line into regular passenger service. Once operational, the airport connection is expected to reduce road traffic and offer a faster, more sustainable alternative for reaching Montreal‑Trudeau.
The ongoing construction and testing phases continue alongside other REM extensions throughout the metropolitan area. As the system advances, each new segment, including the airport branch, brings the vision of a fully connected rapid‑transit network nearer to realization.