When should headlights be turned on during the day?

Headlights should be turned on when visibility is low, such as during rain or fog, because they enhance your visibility to other drivers and help illuminate the road ahead. Conditions like rain, fog, or heavy snow can significantly reduce how far you can see, making it crucial to turn on your headlights to ensure that other motorists can detect your vehicle.

Using headlights in these situations not only aids in your own visibility but also communicates to others that you are present on the road, which can significantly reduce the risk of accidents. It's important to recognize that headlights are not just for darkness; they serve a key role in safety during adverse weather conditions.