When must you use your headlights while driving?

Using headlights from sunset to sunrise and during inclement weather is vital for safety on the road. This guideline ensures visibility for the driver as well as for other road users. During nighttime, headlights illuminate the road ahead, allowing drivers to see obstacles and signals. Additionally, using headlights in poor weather conditions—such as rain, fog, snow, or heavy haze—greatly enhances visibility. It’s not just about enabling the driver to see better; it also allows other drivers to see your vehicle, decreasing the likelihood of accidents.

The other options are less comprehensive. For instance, only using headlights at night does not account for situations, such as low visibility due to weather conditions, that can occur at any time of the day. Similarly, limiting their use from sunrise to sunset misses the important aspect of using headlights when visibility is compromised, regardless of the time of day. Finally, while headlights are important when it's raining, they are also crucial in various other weather conditions like fog or snow, which are not covered in that option. This makes the choice of using headlights from sunset to sunrise and during inclement weather the most comprehensive and safe.