Revision question · Motorway rules

What helps to reduce traffic bunching on a motorway?

Revision material from the imported DVSA bank includes source-checked Lanekind learning corrections. These corrections are not newly issued official examination questions, and practice does not reproduce a live test paper.

Answer options

Variable speed limits

Contraflow systems

National speed limits

Lane closures

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Variable speed limitsThis was the right answer

Congestion can be reduced by keeping traffic at a constant speed. At busy times, maximum speed limits are displayed on overhead gantries. These can be varied quickly, depending on the amount of traffic. By keeping to a constant speed on busy sections of motorway, overall journey times are normally improved.

Reviewed reading for this question

Why speed limits can varyReviewed guidance summary · The road operator expressly identifies congestion and flow management as purposes; the guide does not promise that every limit eliminates a queue.

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