When must you use your headlights in Texas?

Answer: B — In fog, rain, or when visibility is less than 1000 feet

Using headlights during fog, rain, or when visibility is less than 1000 feet is essential for safety on the road. In these conditions, visibility can be significantly reduced, and headlights help in making the vehicle more visible to other drivers, as well as improving the driver's ability to see the road ahead. Texas law emphasizes the importance of using headlights not just at night, but whenever visibility is compromised due to weather conditions. This ensures not only compliance with the law but also enhances safety for all road users. Being aware of your surroundings and using appropriate lighting in adverse conditions is a critical aspect of responsible driving. While some other options touch on situations where headlights might be necessary, they do not encompass the full requirement as stated in option B, which is more comprehensive and specifically addresses important safety concerns relevant to driving in poor visibility conditions.