When must a driver use their headlights?

Using headlights from sunset to sunrise and during reduced visibility conditions is essential for safe driving. Headlights enhance visibility not only for the driver but also for other road users, which is crucial at night when natural light is minimal. Additionally, reduced visibility conditions can occur during rain, fog, or heavy snow, making it difficult to see both the road and other vehicles. By using headlights in these circumstances, drivers improve their ability to navigate safely and ensure they are visible to others, thus reducing the risk of accidents.

In contrast, headlights should not be limited to only nighttime use, which would ignore the critical need for visibility during poor weather conditions. Similarly, while there may be benefits to driving with headlights during daylight hours, this practice is not universally required unless specific situations necessitate it. Lastly, restricting the use of headlights solely to foggy weather ignores the broader context of reduced visibility, which includes many other scenarios where headlights would enhance safety.