What type of light beams should you use when driving in heavy fog?

Using low beam headlights when driving in heavy fog is essential for visibility and safety. High beam headlights can create a significant amount of glare when they reflect off the fog, rain, or snow, making it harder for you to see the road ahead. The light from high beams shines upward, causing the beams to scatter and create a white wall of light, which can temporarily blind the driver.

In contrast, low beam headlights are designed to cast light down onto the road in front of the vehicle, illuminating the traveling surface without causing excessive glare. This allows the driver to see better and be seen by others without the adverse effects of light reflection. Since fog often reduces visibility significantly, using low beams helps maintain clear sight of the road, other vehicles, and any potential hazards.

While flashlights and parking lights can be useful in specific situations, they are not suitable for standard driving conditions in fog. Flashlights provide limited illumination and are impractical for driving, while parking lights do not sufficiently illuminate the road ahead. Therefore, low beam headlights are the recommended choice for safe driving in foggy conditions.