What is the "2-second rule" in driving?

The "2-second rule" in driving is primarily a method to maintain a safe following distance between vehicles. This principle suggests that a driver should stay at least two seconds behind the vehicle in front of them. To apply this rule, a driver picks a fixed point on the road, such as a sign or a tree, and counts the seconds it takes for the vehicle ahead to reach that point after passing it. If the driver counts two seconds or more before reaching the same point, it indicates that they are maintaining a safe distance. This practice helps reduce the likelihood of rear-end collisions, allowing sufficient time to react if the vehicle in front suddenly stops or slows down.

While other options presented relate to various driving strategies, they do not specifically address the concept of maintaining a safe following distance, which is the essence of the 2-second rule.