Accident ahead
Warning sign telling you there has been an accident ahead. Slow down, be ready to stop, and expect possible lane closures or emergency vehicles. The sign is there to reduce the risk of secondary collisions. In hazard perception this is a classic 'developing hazard' – you must react early by checking mirrors, signalling if changing lane, and reducing speed. Failing to slow down in time is a common reason for failing the practical test.
- Shape
- Rectangular
- Background
- White
- Border
- Grey/Black
- Text type
- Other
- Diagram reference
- 563.0
Where you'll see this sign
Any road after a collision, especially motorways and fast A roads.
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.
