When should headlights be turned on?

Headlights should be turned on from sunset to sunrise and during bad weather to ensure maximum visibility and safety on the road. This guideline is crucial because natural lighting conditions can be significantly reduced during these times, making it harder for drivers to see and be seen by others. In addition to nighttime driving, weather conditions such as rain, fog, or heavy snowfall also diminish visibility and increase the likelihood of accidents. Therefore, using headlights during these circumstances helps improve safety by enhancing a vehicle's visibility to both drivers and pedestrians.

While headlights may not be necessary in bright daylight or when a vehicle is parked, it is important to remember that their primary function is to illuminate the road and make the vehicle more noticeable. Keeping headlights on in low-visibility situations is a fundamental principle in defensive driving, which emphasizes proactive measures to avoid potential hazards.