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When should you leave a two-second gap between your vehicle and the one in front?

When it's raining
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When it's dry
Correct answer
When it's icy
When it's foggy

DVSA theory test explanation

In good, dry conditions, a driver needs to keep a distance of at least 2 seconds from the car in front. This should allow enough space for you to stop if the driver in front has to stop suddenly.