Which colour is NOT associated with airside vehicle operation lighting?

In the context of airside vehicle operation lighting, specific colors are used to convey important information about vehicle movement and safety. Flashing amber is typically used to alert other vehicles and personnel to a moving or approaching vehicle, indicating caution. Red lighting is often used to signal that a vehicle is stationary or to provide warnings in restricted areas, while white lights are commonly used for standard illumination and to ensure visibility.

Purple, however, does not have a standard association with airside vehicle operations. It is not a color typically recognized in the regulatory guidelines for airport vehicle lighting, which mostly focus on amber, red, and white to ensure safety and clear communication on the airside. Therefore, it is correct to say that purple is not associated with airside vehicle operation lighting, distinguishing it from the more traditional and recognized colors used in these contexts.