What should you do if you have to stop while you’re going through a congested tunnel?

Explanation: It's important to keep a safe distance from the vehicle in front at all times. This still applies in congested tunnels, even if you're moving very slowly or have stopped. If the vehicle in front breaks down, you may need room to manoeuvre past it.

Category: Incidents, accidents and emergencies

References: The Official DVSA Guide to Driving: Section 7, Highway Code: Rule 126