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Safety

Winter Driving Tips For Commercial Truck Drivers

James Tremblay
AZ Instructor
January 18, 20267 min read

Ontario winters punish the unprepared. From tire chains to following distance, here's what new AZ drivers need to know before their first January haul.

Winter is the season that separates new drivers from experienced ones. Loaded trailers behave differently on ice than they do on dry pavement, and the consequences of a mistake scale with the weight you're carrying. Here's the framework we teach for handling Ontario winters safely.

Pre-Trip In Winter Is A Different Game

Cold weather attacks every system. Air brake lines can freeze, batteries lose cranking power, fuel can gel below -10°C without proper additives, and tire pressure drops about 1 PSI for every 10°F decrease. Your winter pre-trip should add 5 minutes specifically for these checks.

  • Drain air tanks daily to prevent moisture from freezing in the lines
  • Check that fuel additive (anti-gel) was added at the last fill
  • Inspect tire pressure on all axles before highway driving
  • Confirm windshield washer fluid is rated for -40°C
  • Carry chains for tires if you're routing into mountain regions or northern Ontario

Following Distance Doubles, At Minimum

The 7-second rule we teach for dry highway becomes 14 seconds in snow, and longer on ice. Your stopping distance with a loaded trailer can triple on a slick surface. Pros leave so much space that other drivers cut in front of them — and pros let it happen, then re-establish the gap.

Bridges, Overpasses, And Black Ice

Bridges freeze before any other surface because cold air circulates underneath them. The 401 between Belleville and the Quebec border has dozens of overpasses that ice over hours before adjacent road surfaces. Lift off the throttle as you approach — never brake while crossing.

Snow Squalls And Whiteout Conditions

Lake-effect squalls along Lake Huron, Georgian Bay, and Lake Ontario can drop visibility from clear to zero in under a minute. If visibility drops below the length of the truck, get to a safe pull-off — turning lane, exit ramp, truck stop. Don't stop on the shoulder of an active highway. Other drivers blinded by the same squall won't see you parked there.

Smooth Inputs Win

Every input — throttle, brake, steering — should be slower and gentler in winter. Sudden movements break traction. The single best habit you can build is to picture a cup of coffee on your dashboard and drive like you're trying not to spill it. If you're ever unsure, slow down. Speed is the one variable always under your control.

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