Whats the separation distances?
You need enough space between yourself and the vehicle in front to pull up safely if it suddenly slows down or stops. Another reasonable rule on faster roads is to keep a minimum of a two second gap. As the vehicle in front passes an object such as a lamp post try saying to yourself “Only a fool breaks the two second rule”. It should take two seconds to say this. If you pass the same object before you’ve finished saying this phrase, then you are too close.
