What does the "two-second rule" in driving help maintain?

The "two-second rule" helps maintain a safe following distance based on time, which is crucial for ensuring adequate reaction time and avoiding collisions. By determining how far behind a vehicle you should be, it provides a simple method for drivers to gauge their space and adjust their speed accordingly. To apply the rule, a driver picks a fixed point on the road, such as a sign or a tree, and counts the seconds it takes for their vehicle to reach that point after the vehicle ahead passes it. If it takes two seconds or more, the following distance is considered safe, giving the driver enough time to react to sudden stops or hazards.

This method is particularly effective because it adjusts for varying speeds and road conditions, allowing for better safety on the road. The other options, while relevant to driving, do not specifically relate to the concept of maintaining a safe following distance.