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Mainroad Group

Please be extremely cautious when approaching a Highway Maintenance Vehicle

MSIWhen drivers attempt to pass a plow truck, they put themselves, their passengers, the truck operator and the driving public at risk.

Keep a safe distance and always stay alert.  Though you see the plow truck, the plow truck operator might not see you.

  • Drivers may not be aware that plows are wide and can extend across the centre line of the highway.
  • On some highways and bridge structures, two or more snow plows may be staggered across multiple lanes with the plow in front pushing snow towards the plows behind. This is an effective way to quickly clear wide areas so we want to remind drivers to stay behind these plowing operations and to not try to pass.
  • Snow plows and salt or sand trucks throw up snow and spray making it difficult to see. Snow plows have limited visibility and plow truck operators cannot see directly behind their trucks.
  • Please give road maintenance crews room to do their work.
  • Remember the road surface ahead of the plow hasn’t been plowed yet therefore please slow down and be patient. The operator will eventually pull over and let you pass safely.

During the winter season, please drive to the conditions, SLOW DOWN, and increase the distance between yourself and the vehicle in front of you. 

Slow Down Move Over regulation protects roadside workers  | Failing to adjust your speed appropriately or failing to move over can result in a $173 ticket and three penalty points.

Visit for current road conditions, weather forecasts, and real-time conditions via webcams.  Residents and motorists can report accidents, unsafe road conditions and road kill to Mainroad’s 24-hour hotline.