What does the three-second rule assist drivers in determining?

The three-second rule is a guideline that helps drivers maintain a safe following distance from the vehicle in front of them. By using this rule, drivers can assess their speed and ensure they have enough time to react if the vehicle ahead suddenly stops or slows down.

To apply the three-second rule, a driver selects a fixed point in the roadway, such as a sign or a tree, and begins counting as the vehicle in front passes that point. If the driver reaches the fixed point before counting to three, it indicates that they may be following too closely and should increase their distance.

This practice is especially important to prevent rear-end collisions and allows adequate reaction time in various driving conditions, ensuring a safer driving experience overall.