You're driving along a motorway and see this sign. What does it mean?
- A There's a steep downhill section ahead
- B Only lorries and buses are allowed to use that lane
- C Vehicles fitted with speed limiters must use that lane
- D There's a long uphill gradient ahead
Why this is the answer
Where a motorway has a long or steep gradient, slow-moving large vehicles might get in the way of other traffic. To help the traffic flow, an extra lane - called a crawler lane - is sometimes found on these gradients. This helps the traffic to flow by providing the slower heavy vehicles with a dedicated lane on the left.
Why the other answers don't fit
- A
- There's a steep downhill section ahead — A downhill section is signed with a different symbol and a percentage.
- B
- Only lorries and buses are allowed to use that lane — The lane is provided for slow vehicles, not reserved for a class of them.
- C
- Vehicles fitted with speed limiters must use that lane — Speed limiters do not determine which lane a vehicle must use.
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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