When must headlights be used?

Using headlights is crucial for ensuring visibility and safety while driving. Headlights are required to be used during specific conditions to help you see the road ahead and to allow other drivers to see you.

Firstly, headlights must be used at night, which is a fundamental requirement for safe driving in the dark. Without headlights, it becomes exceedingly difficult to detect obstacles, road signs, or other vehicles, increasing the risk of accidents.

Secondly, headlights are necessary during adverse weather conditions such as rain, fog, or snow. These weather conditions can significantly reduce visibility, and using headlights helps improve the ability to see the road and for others to see you. The law often specifies that when visibility is reduced to a certain degree, such as when it's raining heavily or foggy, headlights must be turned on.

Therefore, saying that headlights should be used at night and during adverse weather conditions captures the essential scenarios in which their use is not just beneficial but legally mandated for the safety of all road users.