National Highways says: "Keeping a safe distance from the vehicle in front gives you time to react and stop if you need to.
'Two-second rule' all UK drivers need to know to avoid three points on licence Motorists are being urged to stick to the 'two-second rule' to steer clear of a £100 penalty.
Officials at National Highways point out that tailgating stands as "the single biggest issue that drivers find irritating or intimidating".
You basically need to be two seconds behind the car in front - and there's an easy way to do it without even counting.
To try to stop this practice, National Highways says use the two-second rule.