The A23 warning sign alerts you to areas where aircraft might fly overhead at low altitudes, such as near airports or airfields. This can cause sudden noise and distraction, so it’s crucial to maintain focus on the road and traffic. Drive steadily, keep a safe distance, and be extra aware of cyclists, pedestrians, and animals that might react unexpectedly to the noise. Your primary focus should always remain on safe driving.
Learn the key details of the A23 - Warning for Low-Flying Aircraft road sign, including its function, what it communicates to drivers, and how it applies in real traffic situations in Sweden. Use this overview to understand the sign clearly and recognise it confidently during the Swedish driving theory exam.
This warning sign indicates an area where aircraft may fly at low altitude, such as near airports, airfields, or flight paths. Low-flying aircraft can create sudden noise and distraction that may startle drivers or vulnerable road users. You should maintain steady control, keep a safe following distance, and avoid unnecessary sudden maneuvers if you are distracted. Be extra mindful of cyclists, pedestrians, and animals that may react unpredictably to aircraft noise. Continue to focus primarily on the road environment and traffic conditions.
Low-flying aircraft may pass overhead. Distraction or noise may affect traffic.
Get clear, practical answers to the most common questions about the A23 - Warning for Low-Flying Aircraft road sign. Learn how the sign works, what rules it represents, and how it affects real driving situations. This FAQ strengthens your understanding and supports accurate decision making for the Swedish driving theory exam in Sweden.
The A23 sign is a warning sign indicating that aircraft may be flying at low altitudes in the area. It serves to alert drivers to potential distractions or sudden noises that could affect traffic safety.
When you see the A23 sign, remain calm and focused on driving. Avoid sudden steering or braking actions. Keep a steady speed and maintain awareness of other road users, especially vulnerable ones like pedestrians and cyclists, who might react more strongly to aircraft noise.
The main risk is distraction caused by the noise or sight of low-flying aircraft. This distraction can lead to reduced attention to the road, potentially causing dangerous situations. It's important to consciously resist being drawn away from your primary task of driving.
Yes, you should avoid looking away from the road for extended periods, making abrupt steering inputs due to distraction, speeding while your attention is reduced, and generally ignoring other road users' reactions to the overhead activity. Always prioritize safe driving.
While the sign doesn't explicitly ban these actions, it strongly implies you should be extra vigilant. Any activity that reduces your focus on the road, such as using a mobile phone or fiddling with controls, is more risky in an area with potential aircraft distractions. It’s best to keep distractions to an absolute minimum.
A clear reference image of the A23 - Warning for Low-Flying Aircraft road sign used in Sweden.

The A23 - Warning for Low-Flying Aircraft road sign may also be known by these alternative names or terms.
The A23 - Warning for Low-Flying Aircraft road sign is part of the Warning Signs (A) category, which groups together signs with similar rules and functions.