What's a rumble device designed to do?
- A Give directions
- B Prevent cattle escaping
- C Alert you to low tyre pressure
- D Alert you to a hazard
Why this is the answer
A rumble device consists of raised markings or strips, designed to give drivers an audible, visual and tactile warning. These devices are used in various locations, including in the line separating the hard shoulder and the left-hand lane on the motorway and on the approach to some hazards, to alert drivers to the need to slow down.
Why the other answers don't fit
- A
- Give directions — Directions come from signs.
- B
- Prevent cattle escaping — That is a cattle grid, which looks and sounds quite different.
- C
- Alert you to low tyre pressure — A tyre pressure warning comes from the car, not from the road.
Where this comes from
- Know Your Traffic Signs — page 89
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: Car , Motorcycle
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