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Malfunction on new branch of Montreal rail network caused by signalling system
Service was suspended for hours due to a signalling fault on the new REM branch linking downtown Montreal and Deux-Montagnes, resolved by 9:30 a.m., officials said.
- On Dec. 5, 2025, Réseau express métropolitain reported a signalling malfunction that interrupted service this morning on the new REM branch linking downtown Montreal and Deux-Montagnes, Que.
- The signalling system enables automated trains to recognize tracks and objects, and the Réseau express métropolitain spokesperson did not say whether the issue was linked to Montreal's wind chill around-23 C.
- Service was suspended at several REM stations for a few hours until REM restored service around 9:30 a.m., following a signalling issue; a Réseau express métropolitain test run took place July 19, 2023.
- Frequent interruptions after 2023 have raised public confidence in REM service concerns, The Canadian Press first published this report Dec. 5, 2025.
- With the branch opening last month, the new REM branch experienced a signalling malfunction on the route to Deux-Montagnes, Que., which REM spokesperson did not link to wind chill near-23 C.
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Winnipeg Free Press+21 Reposted by 21 other sources
Malfunction on new branch of Montreal rail network caused by signalling system
Breaking News, Sports, Manitoba, Canada
·Winnipeg, Canada
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Total News Sources23
Leaning Left15Leaning Right3Center2Last UpdatedBias Distribution75% Left
Bias Distribution
- 75% of the sources lean Left
75% Left
L 75%
15%
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