What is one of the hazards of stopping a tractor/trailer combination on a slippery road?

Stopping a tractor/trailer combination on a slippery road presents unique challenges due to the dynamics of the vehicle's design and the road conditions. When brakes are applied, the potential for the wheels to lose grip increases significantly. In this situation, if the driver brakes too hard or quickly, the rear wheels of the trailer can start to slide while the front of the tractor maintains traction, leading to a condition known as jackknifing. This can cause the trailer to swing out sideways, threatening the stability of the entire vehicle and creating a dangerous situation for the driver and others on the road.

Understanding this hazard is crucial for safe driving in commercial vehicles, especially on wet, icy, or otherwise slick surfaces. A driver must be cautious and use gentle braking techniques to reduce speed gradually, ensuring they maintain control of the vehicle and prevent skids or loss of vehicle alignment. This knowledge reinforces safe operational practices under adverse conditions, contributing to overall road safety.