What is the most effective way to manage a rear-end collision threat?

Adjusting your speed and position to maintain space is the most effective way to manage a rear-end collision threat. By doing so, you create a buffer zone between you and the vehicle behind you, which can significantly reduce the risk of a collision. If the driver behind is following too closely, increasing your speed can help create distance, or if necessary, slowing down while being mindful of your surroundings can help maintain a safe space.

This approach allows you to anticipate the movements of the vehicle behind you and respond accordingly. It also helps you avoid giving mixed signals and keeps your options open in case you need to maneuver out of the way. In contrast, simply honking the horn may not effectively change the behavior of the driver behind; changing lanes quickly can be dangerous without ensuring that the lane is clear; and braking suddenly can lead to an unexpected situation that may increase the likelihood of an accident rather than prevent it.