You are on a fast, open road in good conditions. For safety, the distance between you and the vehicle in front should be

Explanation: One useful method of checking that you've allowed enough room between you and the vehicle in front is the two-second rule.To check for a two-second time gap, choose a stationary object ahead, such as a bridge or road sign. When the car in front passes the object say 'Only a fool breaks the two-second rule'. If you reach the object before you finish saying it you're too close.

Category: Safety Margins

References: The Official DVSA Guide to Driving: Section 7, Highway Code: Rule 126