https://dailyhive.com/montreal/montreal-weather-heavy-snowfall-forecast
Although it can get very cold at times, at lest the Montreal_Metro is built on a grand scale for a big city. Being from backward Vancouver, one can only imagine if the SkyTrain could have been built on a similar grand scale. All the SkyTrain stations should have been built with a future provision to have 500ft or 152.5m long platforms. https://en.wikipedia.org/wiki/SkyTrain_rolling_stock#Summary
Instead, the first 2 lines are just barely half the length of a Montreal station. The 3rd line was only built to ultimately have only 50m stations. Not even quite a 3rd of the length of a 152.5m Montreal Metro station.
https://montrealgazette.com/news/local-news/metro-service-partially-disrupted-on-orange-line