What is the legal requirement for headlights during the day in Texas?

In Texas, the legal requirement for using headlights during the day primarily revolves around visibility conditions. Headlights are required to be on in low-visibility situations, such as during rain, fog, or when driving through tunnels. This regulation is crucial for ensuring safety on the roads, as appropriate lighting helps other drivers see a vehicle when conditions are poor.

Daytime running lights, found on many modern vehicles, can enhance visibility but are not a substitute for headlights in low-visibility conditions. Thus, having headlights on during such times helps prevent accidents and enhances road safety for everyone.

In contrast, headlights do not need to be on at all times during the day, nor is there a specific mandate tied to the age of the vehicle for daytime driving under clear conditions. Therefore, the focus on low-visibility scenarios makes the second choice the correct understanding of Texas law regarding daytime headlight use.