What could happen if a sudden steering movement is made while driving a double trailer rig?

Making a sudden steering movement while driving a double trailer rig can significantly affect the stability of the entire vehicle. When a driver jerks the steering wheel, it introduces a rapid change in direction that can lead to a variety of issues. Among these, the most critical concern is that the back trailer can indeed roll over. This is because the dynamics of a double trailer rig involve a considerable amount of weight and momentum, which can easily become unbalanced with abrupt movements.

The back trailer, being further from the point of control, is particularly susceptible to tipping due to the inertia created when the front trailer alters direction suddenly. This tipping can lead to a rollover situation, which poses a serious safety risk not only to the driver but also to other road users.

Understanding this concept highlights the importance of smooth and deliberate steering actions when navigating a double or triple-trailer setup, as even minor steering errors can lead to severe consequences.