Under which condition must headlights be used?

Headlights are essential for safe driving under various conditions to ensure visibility and to help others see your vehicle. Using headlights at night is crucial because it is dark and visibility is limited. When visibility is less than 1,000 feet, such as during fog, heavy rain, or snow, headlights provide necessary illumination to see the road and surroundings. During inclement weather, using headlights enhances visibility not just for the driver but also for other road users, reducing the risk of accidents.

Therefore, headlights should be used in all the situations listed, highlighting their importance in promoting road safety in various driving conditions. Each scenario emphasizes how essential it is to have your headlights on to maintain safety for yourself and others on the road.