What is offtracking?

Offtracking refers to the phenomenon of a vehicle's rear wheels deviating from the path traced by its front wheels during a turn. This is a significant factor to consider when operating large vehicles such as trucks and trailers, as it can greatly impact maneuverability and safety.

The primary reason for offtracking is the pivot point, which is the point where the vehicle turns. In a typical vehicle configuration, the front wheels serve as the pivot point. However, in a vehicle with a longer wheelbase or when towing a trailer, the rear wheels may also contribute to offtracking.

Offtracking occurs due to the difference between the turning radius of the front and rear wheels. As the vehicle turns, the rear wheels take a shorter path, resulting in them cutting inward compared to the front wheels. The longer the wheelbase or the larger the trailer, the more pronounced the offtracking effect becomes.

Drivers need to be aware of offtracking to avoid potential hazards. When making turns, they should take into account the amount of offtracking and ensure there is enough space between the vehicle and any objects or obstacles in its path. Additionally, it is crucial to keep an eye on the rear section of the vehicle, especially when maneuvering through tight spots.

To mitigate offtracking, manufacturers have introduced several design features. One commonly used technique is the implementation of a sliding fifth wheel or the use of longer wheelbases, which reduce the offtracking effect. Trailer manufacturers have also worked on improving designs to minimize the turning radius of the rear wheels.

Overall, understanding offtracking is critical for drivers operating large vehicles. Being knowledgeable about the phenomenon helps them anticipate and compensate for the differences in path between the front and rear wheels, enhancing safety and maneuverability.