What is the term for a commercial vehicle's habit of swinging wide on turns?

The term that describes a commercial vehicle's tendency to swing wide on turns is "off tracking." This phenomenon occurs because the vehicle's rear wheels do not follow the same path as the front wheels when navigating corners, particularly in larger vehicles like trucks and trailers. Due to their length and articulation, the rear wheels can end up on the inside of the turn, causing the front of the vehicle to extend outwards and track wider than expected.

Understanding off tracking is essential for ensuring safety and maneuverability, especially in tight spaces or when making sharp turns. Drivers must be aware of this behavior to avoid collisions with obstacles, pedestrians, or other vehicles. Recognizing the implications of off tracking is crucial in truck operation and can help in making informed driving decisions to maintain control and safety on the road.