When should a driver use their headlights while driving on the airfield?

Using headlights at all times while driving on the airfield is essential for safety and visibility, which is why this choice is correct. Headlights help ensure that drivers can see their surroundings clearly, which is vital for avoiding hazards that may not be immediately visible. Additionally, headlights make the vehicle more visible to other drivers and personnel in the area, reducing the chances of accidents occurring due to lack of awareness.

While it may seem sufficient to use headlights only at night or in low visibility conditions, airfields often have complex environments that can present visibility challenges at any time of day. Even during daylight, bright lights and reflections can obscure visibility, and using headlights can enhance a vehicle's presence in the active, busy airfield environment.

Relying solely on specific conditions like nighttime or when crossing runways may lead to dangerous situations where a driver is not adequately prepared for unexpected events or interactions with other vehicles or aircraft. Hence, always using headlights contributes to a culture of safety and vigilance that's crucial in airfield operations.