Safe following distances

Keeping a safe following distance is one of the best ways you can help improve safety and reduce congestion.
In good driving conditions, count two seconds between the back of the vehicle in front of you and the front of yours. In poor conditions, low visibility, or if you’re on loose chip, increase it to four seconds.
Following the two- or four-second rules gives you time to react if something happens in front of you. This reduces the chances of a crash, and helps minimise congestion.