Low flying helicopters or sudden helicopter noise likely ahead
Warning of low-flying helicopters or sudden noise. This sign is common near helicopter routes and airfields. In the theory test it tests your awareness of aircraft hazards and the need to be alert. Always look well ahead and be prepared for sudden noise or movement.
- Shape
- Triangular
- Background
- White
- Border
- Red
- Primary symbol
- Vehicle (Car/Tram/Truck)
- Diagram reference
- 558.1
Where you'll see this sign
Near helicopter routes and airfields.
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.
