What is the 'three-second rule' in safe driving?

The 'three-second rule' refers to a guideline that helps drivers maintain a safe following distance behind the vehicle in front of them. By waiting for three seconds from the moment the vehicle ahead passes a fixed point, you can determine if you are following at a safe distance. This distance allows for adequate stopping time in case of sudden stops or emergencies. The rule is simple to apply: when the backend of the car in front of you passes a sign or a stationary object, you begin counting seconds until your front bumper passes the same point. This method helps prevent tailgating, which can lead to accidents, especially in situations where sudden brakes are applied. Understanding and applying this rule is fundamental to defensive driving and ensuring everyone's safety on the road.