What should you do if you see yellow flashing runway guard lights?

Seeing yellow flashing runway guard lights indicates a critical warning associated with runway incursions. These lights serve as a signal to alert vehicle operators that they are approaching an active runway. The correct response to this visual cue is to stop and wait for clearance. This action is essential to ensure the safety of both aircraft and vehicles, as it prevents unauthorized entry onto the runway where aircraft could be taking off or landing.

Understanding this response is crucial for airside operations. Yellow flashing lights are a part of the airport's safety measures to help maintain a safe operating environment. By stopping and awaiting further instructions or clearance from air traffic control, vehicle operators contribute to preventing potential conflicts with aircraft, ensuring that safety protocols are adhered to in the busy airspace around runways.