When must the lights of your vehicle be turned on?

The requirement to turn on your vehicle's lights when persons or vehicles cannot be clearly seen for 1,000 feet is based on safety regulations designed to enhance visibility and reduce the likelihood of accidents. When visibility drops, whether due to weather conditions such as fog, rain, or nighttime driving, activating your vehicle's lights ensures that you can see others on the road and that they can see you. This distance is established because being seen from 1,000 feet away gives drivers ample time to react—whether to slow down, stop, or change their path.

The other distances mentioned do not align with the recognized safety guidelines in Texas regarding headlight use, which is why they do not represent the correct requirement for when to turn on vehicle lights.