Texas Drivers Ed Written Practice Test

Headlights are required in Texas from sunset to sunrise and during low visibility conditions. This regulation is critical for ensuring that drivers can see the road and other vehicles clearly when natural light is not sufficient, such as at night. Additionally, low visibility conditions might include times when it's raining, foggy, or when there are other factors that impair visibility, making it essential for safety.

In terms of other options, saying headlights are required only from sunrise to sunset does not account for the necessity of using lights in low visibility situations during the day. Limiting headlight use to fog only ignores the broader requirement for nighttime driving and conditions that may necessitate additional visibility aids. Lastly, the option suggesting headlights are needed only at night on highways overlooks the fact that low visibility conditions can occur anywhere, not just on highways, and that safety should always be prioritized regardless of the driving environment.