What lights or markings must self-propelled vehicles have while operating on airport aprons?

Self-propelled vehicles operating on airport aprons are required to have a comprehensive range of lights and markings to ensure visibility and safety. A yellow beacon, headlights, parking lights, and tail lights are critical components that enhance the vehicle's presence in an often busy and hazardous environment. The yellow beacon is particularly important as it signals caution to other vehicles and personnel, helping to prevent accidents in areas where high levels of activity occur.

Headlights provide illumination, making the vehicle more visible during low-light conditions, while parking lights help indicate the vehicle's position when stationary. Tail lights serve a similar function, ensuring that the vehicle is visible from behind, especially important in reversing or low-visibility situations. Together, these lights and markings not only enhance the safety of the vehicle operator but also contribute to the overall safety of airport operations by minimizing the risk of collisions and ensuring clear communication with other airside users.