Rail hub · REM & STM
Montreal spent 2025 rebuilding its transit skeleton. The REM light-rail network was formally inaugurated in November 2025, the Deux-Montagnes branch entered service on 17 November, and the West Island branch followed in May 2026 — lifting weekday ridership to an average 130,000 with a record 149,000 on 22 September. The STM metro underneath moved 293.9 million trips in a strike-affected year.
The REM is Canada’s first fully automated light-rail network and the largest transit project in Quebec in half a century. The first Brossard segment opened in 2023; the central and northern sections followed in November 2025, and the western branch to Anse-à-l’Orme opened on 18 May 2026. Ridership responded immediately: from 78,000 average weekday trips after the second segment to 130,000 by September 2026 — a peak of 149,000 on 22 September — already approaching the original 2026 forecast of roughly 168,000 a day.
The REM rewires the metro rather than replacing it: connections at McGill, Édouard-Montpetit and Bonaventure funnel riders into the STM’s four lines, which remain the continent’s busiest metro per kilometre. The STM itself had a hard 2025 — 293.9 million trips, −6.6%, with strike disruptions and a visible drop in international students — which makes the REM’s ramp the network’s only growth story.
The final piece is the one that matters for this series: the REM station at Montréal-Trudeau, under construction with $113.7 million invested in 2025 alone. When it opens, the airport joins the automated spine directly — the 747 express bus, a downtown staple since 2010, finally gets a rail successor, and the metropolitan network reaches the terminal without a transfer.
The TIO framing: watch the REM’s weekday average, not the STM total. The metro’s decline is demographic and labour-related; the REM’s curve is the cleanest read on Montreal’s transit future. If the network holds 130,000+ through the winter and the airport station opens on schedule, Montreal completes the rare trick of a North American city adding a whole new rail mode in the 2020s — and its hotel and convention economics change with it.
The TIO Read: Montreal is the only city in the series where the rail story is the city story. The REM went from a five-station starter to a 130,000-a-day network in eighteen months, and the airport station will make YUL a rail-connected hub — something Toronto still hasn’t managed. Investors should read the STM’s −6.6% as noise and the REM’s September record as signal. Book the hotels near the REM trunk for the UCI September: that is where the city’s new mobility and its biggest event since 1976 meet.
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