What must you anticipate with this road sign?

This road sign warns you about the proximity to an airport or airfield. The key points to anticipate are:

1. Sudden noise from airplanes: Airplanes taking off or landing can create unexpected loud noise, which might startle drivers or pedestrians.

2. Other road users may become distracted: The unusual sight or sound of planes nearby can divert the attention of drivers or pedestrians, increasing the risk of accidents.

3. Vehicles that brake suddenly: Due to distractions or noise, some drivers might brake abruptly, so you should stay alert and keep a safe distance.

In summary, this sign warns you to be extra cautious and prepared for sudden changes in traffic behavior caused by the nearby airport environment.