What does off tracking refer to in driving a vehicle with a trailer?

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Off tracking refers to the phenomenon where the rear wheels of a vehicle, particularly when towing a trailer, follow a different path than the front wheels during a turn. This occurs because of the geometry of the vehicle-trailer combination and the pivot point caused by the trailer hitch. When a vehicle turns, the front wheels describe a sharper arc compared to the rear wheels, causing the rear wheels of the trailer to move inward, leading to a wider path than that of the front wheels.

Understanding off tracking is crucial for drivers operating combination vehicles, as it can affect clearance and safety when navigating tight turns or corners. This knowledge helps in preventing collisions with roadside obstacles or other vehicles during maneuvers, ensuring that the entire vehicle-trailer combination remains within the intended path.