What's the aim of variable speed limits on a motorway?
- A To prevent overtaking
- B To reduce rest stops
- C To prevent tailgating
- D To reduce congestion
Why this is the answer
Variable speed limits are generally used when the motorway is busy. They help to keep traffic flowing at a steady speed. The speed limits are shown in red circles on overhead gantries.
Why the other answers don't fit
- A
- To prevent overtaking — Overtaking is still permitted; the limits manage the flow.
- B
- To reduce rest stops — Rest stops are a drivers' hours matter.
- C
- To prevent tailgating — Tailgating is dealt with by enforcement and driver behaviour.
Where this comes from
- Driving Buses and Coaches — section 8
- Driving Goods Vehicles — section 8
Rule numbers link to The Highway Code on gov.uk.
Where this question comes from
The question, its options and the explanation are reproduced word for word from the DVSA revision question bank under licence. The licence requires them to appear unaltered, so we cannot reword them and neither can anyone else — that is why you will meet the same wording on other sites. Everything else on this page is written by Theory Hub: the explanation of why each wrong answer is wrong, the topic guide and the revision notes.
Asked in: Lorry & Bus (LGV/PCV)
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