What is the purpose of the "three-second rule"?

The "three-second rule" is designed to help drivers maintain a safe following distance from the vehicle in front of them. This rule suggests that a driver should allow a minimum of three seconds between their vehicle and the one ahead, which provides sufficient time to react if the leading vehicle suddenly stops or slows down.

By counting the seconds it takes for the vehicle in front to pass a marker, such as a tree or sign, drivers can assess whether they are following at a safe distance. This practice helps reduce the likelihood of collisions caused by tailgating or insufficient stopping time, especially in wet or slippery conditions where stopping distances may be longer.

While establishing a minimum speed or determining the distance between cars is relevant to safe driving, the essence of the three-second rule specifically focuses on the importance of maintaining an appropriate distance to enhance overall road safety.