With low temperatures predicted through this weekend, along with 10 to 15 centimetres of snow, experts, including the Quebec Ministry of Transportation, warn that de-icing products used on roads may be less effective in general during extra-cold conditions. In some areas, abrasive products like sand are used but it is worth noting that your tires, too, are less effective when it comes to having good traction.
If you are planning a longer trip, check on road conditions prior to departure. Allow extra distance between your vehicle and others on the road.
Check live road conditions in Ontario here.
In Quebec, find info here.