What is the purpose of the "3-second rule"?

The "3-second rule" is a guideline used by drivers to maintain a safe following distance from the vehicle in front of them. This rule suggests that a driver should choose a fixed point on the road, such as a sign or a tree, and start counting when the vehicle in front passes that point. If the driver reaches that point in less than three seconds, they are likely following too closely and should increase their distance.

Maintaining a safe following distance is crucial for allowing sufficient time to react to sudden stops or emergencies of the vehicle ahead. This practice helps prevent rear-end collisions and provides the driver with enough space to respond to unforeseen circumstances, enhancing overall road safety. The other choices relate to different driving concepts such as right of way, speed measurement, or stopping distance, which do not directly pertain to the specific application of the "3-second rule."