What is the 'two-second rule' used for?

The 'two-second rule' is a method for determining a safe following distance from the vehicle ahead. This rule suggests that a driver should maintain a distance that allows them enough time to react to any sudden stops or emergencies. The principle is simple: when the vehicle in front passes a fixed point, such as a sign or a tree, the driver should count two seconds before their own vehicle reaches that same point. If it takes less than two seconds to reach that point, the driver is too close and should increase their following distance.

This practice is crucial for maintaining safety on the road, as it provides a buffer zone that gives drivers time to react to the actions of the vehicle in front of them. It helps reduce the risk of rear-end collisions, especially in situations where either driver might need to stop abruptly.

The other options focus on different safety measures that are important for driving but do not relate directly to the concept of maintaining a safe distance behind another vehicle. The two-second rule specifically addresses the timing of responses in everyday driving scenarios, making it a foundational guideline for safe driving practices.