What should a driver do if they notice swaying in their double trailer?

When a driver notices swaying in a double trailer, the best course of action is to reduce speed gradually while maintaining control of the vehicle. This approach is effective because swaying can indicate that the trailers are becoming unstable, potentially leading to a jackknife situation if not addressed correctly.

By gradually reducing speed, the driver allows the momentum to decrease without applying sudden forces, which could exacerbate the swaying. Maintaining control of the vehicle is crucial to ensure that the trailers do not hit each other or veer off course. This measured response helps to stabilize the trailers and regain a safer driving condition.

Other strategies, such as speeding up or applying the brakes firmly, could lead to further instability and loss of control. Steering sharply may also provoke additional side-to-side motion in the trailers, worsening the swaying issue. Therefore, a gradual reduction in speed while keeping control is the safest and most effective way to manage the situation.