Winter safety starts before the truck moves. A legal schedule and a weather app do not guarantee that a route is safe. Drivers must continually adjust for traction, visibility, wind, temperature, traffic, and the behavior of surrounding vehicles.
Plan the route and a stopping point
- Review state DOT road conditions, closures, chain controls, wind restrictions, and mountain passes.
- Identify truck-safe fuel and parking before entering the worst section.
- Allow time for inspection, chain installation, slower travel, and a safe shutdown.
- Confirm that navigation accounts for commercial height, weight, and route restrictions.
Inspect winter-critical equipment
Check tires, brakes, air lines, lights, batteries, charging system, coolant protection, wipers, washer fluid, defrosters, mirrors, and required emergency equipment. Clear snow and ice that obstructs lights, windows, mirrors, steps, and connections. Verify that chains fit the assigned equipment and that you know the installation procedure before reaching a chain-up area.
Drive for the condition, not the posted limit
Reduce speed before curves, ramps, bridges, shaded areas, and downhill sections. Increase following space early and make steering, throttle, and braking inputs smoothly. FMCSA warns that heavy vehicles have long stopping distances even on dry pavement; snow, ice, and reduced visibility increase the margin a driver needs.
Watch for changing traction
- Bridge decks and exposed sections can freeze before nearby pavement.
- Spray disappearing from other tires may indicate a transition to ice.
- Freezing rain and compacted snow can change traction quickly.
- Strong crosswinds are especially important with an empty or lightly loaded trailer.
Braking and descending grades
Select a safe speed and gear before the downgrade. Follow the truck and component manufacturer's instructions for retarders on low-traction surfaces; improper use can contribute to drive-wheel traction loss. Avoid cruise control when conditions require constant speed adjustments.
Know when to stop
Shut down when visibility, traction, wind, equipment condition, or available parking makes continued travel unsafe. Notify dispatch with the location and observed conditions. The adverse-driving-conditions provision can provide limited hours-of-service flexibility when its requirements are met, but it does not require a driver to continue or make an unsafe route safe.
After the storm
Inspect tires, brakes, air lines, lights, trailer connections, and underbody areas for packed snow or damage. Report defects before the next dispatch. If equipment needs service, use the heavy-duty repair directory and the roadside repair checklist.