Which headlights should you use when driving in dense fog or snow?

• A. High beam
• B. Parking lights and high beam
• C. Low beam
• D. Parking lights

Answer: (C)

Using low beam headlights when driving in dense fog or snow is essential for improving visibility. Low beams are designed to cast light downwards onto the road, which reduces the glare that can reflect off the water droplets in fog or the snow particles in the air. This allows you to see the road more clearly without blinding yourself or other drivers.

High beams can create a hazardous situation in fog and snow because their light is directed forward and can bounce off dense atmospheric moisture, causing a whiteout effect that makes it even more difficult to see. Parking lights do not provide sufficient illumination for safe driving in such conditions, making them an inadequate choice as well. Using low beams ensures you have the best visibility while maintaining safety for yourself and others on the road.