What is the Texas rule regarding the use of headlights in fog?

In foggy conditions, it is essential to use low-beam headlights. Low-beam headlights are designed to illuminate the road directly in front of the vehicle without causing excessive glare that can reflect off the fog. This glare can hinder visibility for both the driver and other road users. By utilizing low-beam headlights, a driver enhances their ability to see the road clearly and to be seen by other vehicles.

Using high-beam headlights in fog is counterproductive, as the light can bounce off the fog droplets, creating a blinding effect that reduces overall visibility. Turning off all lights or using only parking lights is not advisable since it would significantly decrease visibility, making it difficult for the driver to see and for others to spot the vehicle. Proper use of low-beam headlights is thus the most effective and safest option for driving in foggy conditions.