A section of Montreal’s REM was out of service Tuesday, just three days after the network’s Deux-Montagnes extension opened to the public.

The REM announced just after 7 a.m. that a truck hit a viaduct near its Bois-Franc station. After a brief system-wide interruption, service between Bois-Franc and Côte-de-Liesse was suspended, with shuttle buses set to run between the two stations.

Following an official launch Friday, the extended REM network was open to the public free over the weekend . It accepted its first paying customers Monday.

REM service has suffered several failures since its 2023 opening, especially during the winter.

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