What should you do before entering a tunnel?
- A Put on your sunglasses
- B Check your tyre pressures
- C Change to a lower gear
- D Tune your radio to a local channel
Why this is the answer
On the approach to many tunnels, a board will indicate a local channel or radio frequency that you should tune into. This should give a warning of any incident or congestion in the tunnel ahead. Severe loss of life has occurred in tunnel fires. Getting advance warning of any problems ahead will help you to take appropriate action in good time.
Why the other answers don't fit
- A
- Put on your sunglasses — Sunglasses make a dark tunnel darker still.
- B
- Check your tyre pressures — Tyre pressures are checked before the journey, not at the tunnel mouth.
- C
- Change to a lower gear — A lower gear is for gradients, not for entering a tunnel.
Where this comes from
- Driving Buses and Coaches — section 7
- Driving Goods Vehicles — section 7
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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