What should you do if your trailer starts to sway while driving?

Answer: B — Reduce speed and steer gently to regain control

When a trailer starts to sway while driving, the appropriate action is to reduce speed and steer gently to regain control. This method allows the driver to stabilize the vehicle and mitigate the swaying motion effectively. Reducing speed helps to lower the forces acting on the trailer, which can diminish the sway's intensity. Gently steering in the direction of the sway helps to realign the trailer with the towing vehicle, promoting a smoother and more controlled response. Accelerating, on the other hand, can exacerbate the sway, as increased speed can amplify the forces acting on both the trailer and the vehicle. Braking abruptly is equally problematic because it can cause the trailer to skid or shift weight unexpectedly, leading to a loss of control. Additionally, changing lanes quickly can further disrupt the alignment of the trailer with the towing vehicle, increasing the risk of a more severe sway or even a roll-over situation. Therefore, reducing speed and steering gently is the best approach to regain control when experiencing trailer sway.