Which vehicle should display a flashing amber light when it's being used on a dual carriageway?
- A A non-emergency ambulance
- B An off-duty fire engine
- C An emergency doctor's vehicle
- D A mobility scooter
Why this is the answer
An amber flashing light on a vehicle indicates that it's slow-moving. Mobility scooters used by disabled people are limited to no more than 8 mph. On dual carriageways, they must display an amber flashing light.
Why the other answers don't fit
- A
- A non-emergency ambulance — A non-emergency ambulance is a normal-speed vehicle.
- B
- An off-duty fire engine — An off-duty fire engine travels at normal road speeds.
- C
- An emergency doctor's vehicle — A doctor on call shows a green beacon.
Where this comes from
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: Driving Instructor (ADI Part 1)
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