Texas DMV Written Driving Practice Test

Using low-beam headlights is recommended for driving in foggy conditions because they illuminate the road without causing excessive glare, which can reflect off the fog and impair visibility. High-beam headlights can actually exacerbate the driving situation in fog, as their light is directed higher and can create a bright wall of light that reduces the driver's ability to see through the fog. Fog lights are designed specifically for such conditions, but if they’re not available, low-beams are the best alternative for maximizing visibility without causing additional problems.

Parks lights are not effective for visibility in any type of driving conditions, as they are primarily intended to indicate the presence of a parked vehicle rather than to spotlight the road ahead. Therefore, using low-beam headlights strikes the right balance for safe traveling in fog, allowing drivers to see the road clearly while not blinding themselves with inappropriate light levels.