What type of lights are limited to a specific duration of operation when the aircraft is stationary?

Taxi lights are specifically designed for use when the aircraft is on the ground and moving, typically during taxiing. They are limited to a specific duration of operation to avoid overuse when the aircraft is stationary, as prolonged use can lead to overheating and potential damage to the lights. The design and operational guidelines for taxi lights emphasize their function to illuminate the ground in front of the aircraft while it is in motion on the surface, thereby enhancing visibility and safety during ground maneuvers.

In contrast, landing lights are used primarily during takeoff and landing, regardless of whether the aircraft is stationary or in motion, and can be on for more extended periods. Emergency lights are activated in critical situations and are designed to work for a sufficient amount of time to assist in evacuations or emergency scenarios. Wing lights serve primarily for visual reference during flight and are not specifically classified by duration of ground use. Thus, taxi lights are the only type that is restricted to a certain duration when the aircraft is stationary to ensure their longevity and reliability.