What does off-tracking specifically relate to in vehicle operation?

Off-tracking specifically relates to the different paths taken by the tires of a vehicle, particularly in multi-trailer combinations such as tractor-trailers. When turning, the rear wheels of the trailer do not follow the same path as the front wheels of the tractor. This is because of the geometry of the vehicle and the way it articulates at the pivot point. As a result, the rear tires may track wider than the front tires, especially on sharp turns, leading to the phenomenon known as off-tracking.

Understanding off-tracking is crucial for maintaining safety while operating larger vehicles. It affects the ability to navigate turns without encroaching into adjacent lanes or hitting curbs. Drivers need to take this into account when making turns to avoid accidents and ensure proper roadway clearance.