Green Line Breakdown Strands Commuters Again

For the second day in a row, the Montreal métro's Green Line ground to a halt Wednesday afternoon, disrupting service between Angrignon and Lionel-Groulx stations for more than an hour.

The Société de transport de Montréal attributed the outage to a train breakdown. The service interruption started before 2:45 p.m., and STM initially estimated service would resume at 3:30 p.m. That window kept sliding—pushed to 3:45, then 4:15—before the agency reported at 3:58 p.m. that service was resuming slowly.

Back-to-back failures on the same line is a red flag. Tuesday saw similar disruptions on the same stretch, suggesting either a specific mechanical issue affecting multiple trains or a deeper system problem. The Green Line already carries some of the heaviest passenger loads on the network, connecting downtown to the West Island. Repeated breakdowns compound delays and push riders toward alternatives that may not exist—or are themselves overcrowded.

STM hasn't announced root cause or whether these incidents are connected. For commuters, the pattern is clear: the Green Line is fragile right now. If you depend on it daily, expect delays to become normal until STM publicly identifies and fixes the underlying problem.