Skip to main content
UK Road Signs

Warning sign

Low-flying helicopters sign

Low-flying helicopters warning sign: a red-bordered triangle with a black helicopter
Sign image: Department for Transport, © Crown copyright

What does the Low-flying helicopters sign mean?

Warns of low-flying helicopters or sudden helicopter noise, such as near a helipad or hospital.

Also known as: Helicopter warning sign

What it means

Helicopters may fly low overhead, with a risk of sudden noise.

The helicopter symbol warns that low-flying helicopters or sudden helicopter noise are possible, such as near a helipad or hospital.

The noise can startle you or animals. Stay alert and keep both hands on the wheel.

Where you'll see it

Near helipads, hospitals, airfields and military sites.

Rules to know

Common mistakes

  • Mistake: Mixing it up with the aircraft sign.

    Instead: Both warn about noise overhead. The helicopter symbol has a rotor, the aircraft symbol has wings.

Test yourself

Recalling the answer helps it stick. Pick an answer to see how you did.

Question 1 of 1

What does this sign mean?

Red-bordered white triangle with a black helicopter silhouette seen from the side

Ready for more? Take the Warning Signs Quiz

Download this sign

© Crown copyright. Free to reuse under the Open Government Licence v3.0, as long as the sign is reproduced accurately and not in a misleading context.

More warning signs

All warning signs

Share this sign

Pinterest (opens in a new tab)Facebook (opens in a new tab)X (opens in a new tab)WhatsApp (opens in a new tab)Email

Sources

Sign image: Department for Transport, Traffic sign images (diagram 558.1). © Crown copyright, reused under the Open Government Licence v3.0.

Last reviewed 11 October 2026. This page explains the sign in our own words; for the full rules, see The Highway Code. How we source and check content