Warning sign
Low-flying helicopters sign
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
The sign warns of low-flying helicopters or sudden helicopter noise.
Know Your Traffic Signs, p. 13
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.
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© 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.
Related signs
Similar
Low-flying aircraft
Warning sign
The same warning for aeroplanes.
See also
Hospital with A&E
Information sign
A hospital may have a helipad.
More warning signs
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- Know Your Traffic Signs (Department for Transport, Sixth edition, 2023), Warning signs, p. 13
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