What describes the function of rotating/flashing beacon lights?

The function of rotating or flashing beacon lights is primarily focused on enhancing the visibility of vehicles and objects, particularly in environments like airports. These lights are designed to draw attention in various lighting conditions, ensuring that vehicles can be seen clearly from dawn to dusk. This increased visibility is crucial for maintaining safety on the airport premises, where a high volume of traffic from aircraft and ground vehicles coexists.

The other options, while related to airport operations, do not accurately capture the primary role of these lights. For instance, while beacons can contribute to safety during takeoff and landing or indicate restricted areas, they are specifically intended to make vehicles visible rather than to signal aircraft directly or guide pilots in adverse weather conditions. Their main purpose is to alert individuals to the presence of vehicles and to prevent accidents, particularly in busy and potentially hazardous environments.