AircraftSwitzerland
35. 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 Switzerland?
The Swiss aircraft warning alerts drivers to aircraft taking off, landing or taxiing near an aerodrome. A separate helicopter warning covers helicopters taking off or landing near a heliport or another designated site. An airport direction sign has a different purpose.
🔗 fedlex.admin.ch • Switzerland: Traffic Rules Ordinance, state 1 October 2026
🔗 fedlex.admin.ch • Switzerland: Road Traffic Act, state 1 July 2026
Warning for low-flying aircraft.
English • Traffic sign 1.28 • Aircraft.
Deutsch • Verkehrssignal 1.28 • Flugzeuge.
Français • Signal 1.28 • Avions.
Italiano • Segnale 1.28 • Velivoli.
Sources
🔗 Commons.wikimedia.org
🔗 Fedlex.admin.ch • SSV, Anhang 2 (DE)
🔗 Fedlex.admin.ch • OSR, annexe 2 (FR)
🔗 Fedlex.admin.ch • OSStr, allegato 2 (IT)
SVG source: Bundesamt für Strassen (ASTRA) • Public domain • Original revision 2017-07-01. Wikimedia original unmodified.
Does an aircraft warning automatically reduce the speed limit in Switzerland?
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.
🔗 fedlex.admin.ch • Switzerland: Traffic Rules Ordinance, state 1 October 2026
🔗 fedlex.admin.ch • Switzerland: Road Traffic Act, state 1 July 2026
What if a low-flying aircraft distracts you while driving in Switzerland?
Keep your eyes on the road, maintain your lane and avoid sudden braking or steering simply to watch the aircraft. If you need to stop, find a safe and permitted stopping place.
🔗 fedlex.admin.ch • Switzerland: Traffic Rules Ordinance, state 1 October 2026
🔗 fedlex.admin.ch • Switzerland: Road Traffic Act, state 1 July 2026

Traffic rules
Switzerland