Texas Driver's License Knowledge TestTraffic Laws and RegulationsHard
According to Texas law, when must a driver use their vehicle's headlights?
- AOnly during nighttime hours, from sunset to sunrise.
- BDuring any period of rain, fog, or smoke, regardless of time of day.
- CAnytime windshield wipers are in continuous use, or when visibility is reduced to 500 feet.
- DFrom 30 minutes after sunset until 30 minutes before sunrise, or when visibility is less than 1,000 feet.
Show answer & explanationAnswer & explanation
Correct answer: C. Anytime windshield wipers are in continuous use, or when visibility is reduced to 500 feet.
Texas law (Transportation Code 547.302) requires headlights from 30 minutes after sunset to 30 minutes before sunrise, or at any other time when conditions reduce visibility to less than 1,000 feet (such as fog, rain, or smoke), AND when windshield wipers are in continuous use due to rain, sleet, or snow.
Why the other options are wrong
- A. This is incomplete; other conditions also require headlight use.
- B. While these conditions often require headlights, the law specifies 'when visibility is reduced' or 'wipers in continuous use', not just the presence of rain, fog, or smoke.
- D. This covers the time-of-day aspect and general low visibility, but misses the 'wipers in use' condition.
Texas Headlight Requirements
Texas law mandates headlight use from 30 minutes after sunset to 30 minutes before sunrise, or when visibility is less than 1,000 feet, or when windshield wipers are in continuous use due to precipitation.
- Sunset to sunrise (plus 30 min buffer).
- Visibility less than 1,000 feet (e.g., fog, heavy rain).
- Wipers in continuous use due to rain, sleet, or snow.
Memory trick: Sun's down, wipers on, or can't see far? Headlights bright, wherever you are!