What is the "three-second rule"?

The "three-second rule" is a guideline for maintaining a safe following distance from the vehicle in front of you. This rule helps drivers ensure they have enough time to react in case the vehicle ahead suddenly stops or slows down. To use the three-second rule, you pick a stationary object by the side of the road, such as a sign or tree. When the vehicle in front of you passes that object, you should be able to count three seconds before your vehicle reaches the same object. If you reach it before the count of three is up, you are following too closely and should increase your following distance.

By maintaining this three-second gap, drivers can significantly reduce the risk of rear-end collisions, as it provides a buffer to react adequately to the actions of the vehicle in front. It is particularly important in adverse weather conditions or during high-speed driving, where the need for increased stopping distance becomes critical.