What happens to the trailer once the wheels grip the road during a jackknife?

When the wheels of the trailer grip the road during a jackknife situation, it tends to realign with the tractor. A jackknife occurs when the trailer swings out to the side of the towing vehicle, often leading to a precarious situation. Once the trailer's wheels have sufficient grip, they will start to align itself back with the direction of the tractor.

This means that the forces involved will cause the trailer to pivot and attempt to straighten up, reducing the angle created during the initial loss of control. This realignment can prevent further instability and assist in regaining control of the vehicle. Understanding this behavior is critical for drivers, as it informs their reactions and responses in mitigating the effects of a jackknife situation.