What does the "two-second rule" help drivers ensure?

The "two-second rule" is a guideline that helps drivers maintain a safe following distance between themselves and the vehicle ahead. By counting two seconds from the moment the vehicle in front of you passes a stationary object, such as a sign or a tree, you can assess whether you are maintaining a safe distance. This practice is essential in allowing adequate time to react if the vehicle in front suddenly stops or slows down, significantly reducing the risk of rear-end collisions.

Maintaining this distance gives drivers the necessary time to respond to unexpected changes on the road, considering factors like speed, road conditions, and vehicle size. It is a fundamental aspect of defensive driving, as it promotes safety and enhances overall road awareness.