What is the purpose of wig/wag lights at taxiway/runway intersections?

The purpose of wig/wag lights at taxiway/runway intersections is to make it obvious that a runway is being intersected. These lights are designed to enhance visibility and draw attention to the critical area where the taxiway meets the runway. The alternating flashing lights provide a clear visual cue for pilots, especially in low visibility conditions, indicating that they are crossing a runway, which is an important aspect of maintaining safety on the airport surface.

By highlighting the intersection, wig/wag lights help prevent potential runway incursions by ensuring that pilots are aware of their position relative to the active runway. This is crucial for safe operations since misunderstandings or lack of awareness in these areas can lead to serious incidents.

The other options do not accurately describe the specific function of wig/wag lights at these intersections. For instance, indicating taxiway closure or signaling a takeoff do not pertain to the primary purpose of these lights. Similarly, while guiding pilots to parking areas is important, it is not the role of wig/wag lights. Therefore, the correct understanding of their function revolves around emphasizing the intersection of taxiways and runways.