What should you do when you're driving through a tunnel in heavy traffic?
- A Stay close to the vehicle in front to reduce congestion
- B Switch off your dipped headlights to reduce dazzle
- C Closely follow the tail lights of other vehicles
- D Follow the instructions given by variable message signs
Why this is the answer
In congested tunnels, you should always obey the instructions given by variable message signs and tunnel officials. Listen out for radio announcements and observe the road signs and signals. Keep your distance from the vehicle in front.
Why the other answers don't fit
- A
- Stay close to the vehicle in front to reduce congestion — Closing up removes the space you would need if anything happened ahead.
- B
- Switch off your dipped headlights to reduce dazzle — Switching lights off makes you invisible in the one place visibility is already poor.
- C
- Closely follow the tail lights of other vehicles — Following tail lights means driving on someone else's judgement rather than your own.
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)
More questions on Incidents, accidents and emergencies
- A passenger on your bus has stopped breathing. You help them by giving cardiopulmonary resuscitation (CPR). When should you stop doing this?
- A vehicle has rolled over and caught fire. The driver's hands and arms have been burned. How could you help the driver?
- At an incident, a casualty has stopped breathing. How could you help them?
- At an incident, a casualty is unconscious but still breathing. Why would you move them?
- At an incident, you suspect a casualty has back injuries. What's the best way to help them?
- At the scene of a crash, a casualty is in contact with live electrical cables. What should you use to break the electrical connection?
- At the scene of an incident, a person has become hysterical. How should you calm them down?
- At the scene of an incident, an injured person is lying in a busy road. What's the first thing you should do to help?