In dry weather, how might a driver judge a safe following distance behind the vehicle in front?

The two-second rule is an effective method for judging a safe following distance in dry weather conditions. This rule helps drivers maintain a safe space between their vehicle and the one ahead by allowing for sufficient reaction time in case of sudden stops. To apply the two-second rule, a driver should choose a fixed point on the road, such as a sign or a tree, and watch as the vehicle in front passes that point. The driver should then count two seconds before their own vehicle reaches the same point. If the driver reaches the marker before two seconds are up, it indicates that they are too close and should increase their following distance.

This rule accounts for normal reaction times and conditions, making it a simple and effective method for maintaining safety on the road. It also adjusts well to different speeds and conditions, ensuring that as driving speeds increase, the following distance increases appropriately to maintain safety.