How far behind another vehicle should you follow?

Following at least one car length for every 10 mph you are traveling is a guideline that helps ensure safe stopping distance between vehicles. This rule is based on the understanding that as speed increases, the distance required to stop also increases. It allows for adequate space to react and brake to avoid collisions, especially in sudden braking situations.

For example, if you are traveling at 40 mph, maintaining a distance of at least four car lengths from the vehicle in front of you provides a safety buffer that accounts for the higher stopping distance required at greater speeds. This practice enhances overall safety on the road by giving drivers sufficient time to respond to potential hazards.