AircraftFrance
An introduction to the traffic rules and road signs of France. Learn about driving, road safety and much more in our illustrated book, with answers to frequently asked questions.
For informational purposes only. Always follow official regulations. Some content and images were created with AI assistance.
41. Aircraft
An aircraft warning is a traffic warning indicating that aircraft may pass at low altitude above or close to the road, usually near an airport, airfield or flight path. The warning is intended to prepare drivers for the sudden appearance or noise of low-flying aircraft.
Drivers should remain focused on the road and avoid sudden braking or steering movements if an aircraft passes overhead. The design and use of aircraft warning signs vary between countries.
Wikimedia.org • Marc Mongenet • CC BY-SA
What should an aircraft-warning sign tell drivers in France?
The French A23 warning indicates an air-traffic danger area. It warns of a hazard associated with aircraft near the road; it is different from direction guidance to an airport. Keep your attention on the road and obey any associated signals or barriers.
🔗 equipementsdelaroute.cerema.fr • Cerema current IISR part 2 consolidation
🔗 service-public.gouv.fr • French Government, national and built-up-area speed limits
Warning for low-flying aircraft.
English • Traffic sign A23 • Crossing an area of aircraft-related danger.
Français • Panneau A23 • Traversée d'une aire de danger aérien.
🔗 Sources
🔗 Commons.wikimedia.org
🔗 Equipementsdelaroute.cerema.fr • Arrêté du 24 novembre 1967
© Roulex 45 et les contributeurs Wikimedia • CC BY-SA 3.0 • SVG original non modifié.
Image via Commons.wikimedia.org
Roulex_45 • CC BY-SA 3.0 • Source revision 2013-07-05. Wikimedia original unmodified.
Does an aircraft warning automatically reduce the speed limit in France?
No, not by itself. A hazard warning is not a numerical speed-limit sign. Obey any separately displayed speed restriction and adjust speed if actual conditions make this necessary.
🔗 equipementsdelaroute.cerema.fr • Cerema current IISR part 2 consolidation
🔗 service-public.gouv.fr • French Government, national and built-up-area speed limits

Traffic rules
France