When are the runway entrance lights off?

The runway entrance lights are off when it is safe to cross. This indicates that there are no active operations on the runway, allowing vehicles to proceed without the risk of encountering aircraft. The lights serve as a visual signal to drivers, providing clear guidance on the conditions of the runway. A situation with the lights off ensures that the area is clear and safe for drivers to enter or cross the runway without hesitation.

In contrast, the other scenarios, such as unsafe conditions or runway maintenance, would typically have the lights on to alert drivers to exercise caution or refrain from crossing. Heavy traffic could create a high-risk situation, and the lights would likely be illuminated to signal that crossing should not occur at that time. Therefore, the operation of the runway entrance lights is a critical aspect of safety management at the airport, ensuring that drivers have the necessary information to make safe decisions while navigating around runways.