Study topic
The two-second rule
The two-second rule is a simple way to keep a safe gap from the vehicle in front. It comes up in the theory test as the standard safe following distance in good conditions.
Key facts to remember
- ◆ In good, dry conditions leave at least a two-second gap to the vehicle ahead.
- ◆ Pick a fixed point such as a sign, then say "only a fool breaks the two-second rule".
- ◆ If you reach the point before you finish saying it, you are too close.
- ◆ Double the gap to at least four seconds in the wet.
- ◆ Leave up to ten times the gap on icy roads.
Tailgating is dangerous and a common cause of rear-end collisions. If a vehicle is too close behind you, slow down gradually to increase the gap to the vehicle in front, giving you both more room to stop.