Tunnel ahead
Warning of a tunnel ahead. This sign is common on motorway and A-road tunnels. In the theory test it tests your awareness of tunnel hazards and the need to reduce speed and switch on headlights. Always look well ahead and be prepared for the change in lighting.
- Shape
- Triangular
- Background
- White
- Border
- Red
- Primary symbol
- Other
- Diagram reference
- 529.1
Where you'll see this sign
Motorway and A-road tunnels.
Test yourself on UK road signs
How well do you really know your road signs? New Driver Hub's free mock theory test pulls from official-style DVSA questions and tells you which signs you keep getting wrong.
