What does the two-second rule refer to?

The two-second rule refers to the minimum safe driving distance behind a vehicle in good conditions. This practice is based on a simple principle aimed at maintaining a safe following distance. By keeping at least a two-second gap between your vehicle and the one in front of you, you allow yourself adequate time to react if the vehicle ahead suddenly stops or slows down.

This rule operates under ideal driving conditions, meaning clear visibility and good weather. To apply the rule, you choose a fixed point on the road, such as a sign or a tree, and when the vehicle ahead passes that point, you should be able to count two full seconds before you reach the same point. If you reach it sooner, you are following too closely, which can lead to rear-end collisions.

Recognizing this principle helps enhance overall road safety by encouraging drivers to avoid tailgating and to be more mindful of the space needed to react to changing traffic conditions. Other options relate to different aspects of driving but do not pertain to the concept of maintaining a safe distance based on time.