How should you handle driving in heavy fog?

When driving in heavy fog, using low-beam headlights and reducing speed is the safest approach. Low-beam headlights are specifically designed to provide adequate visibility without causing glare that can reflect off fog, rain, or snow, which could impair your own visibility and that of other drivers.

Reducing speed is also crucial in foggy conditions because visibility is significantly decreased, making it harder to judge distances and the speed of oncoming vehicles. Slowing down provides additional time to react to any unexpected obstacles or changes in traffic conditions.

Using high-beam headlights in fog can create additional visibility issues, as the light reflects off the water droplets in the fog, causing a wall of glare that makes it even harder to see. Completely turning off headlights can leave you entirely invisible to other vehicles, which is extremely dangerous. Following the tail lights of the car in front may seem like a practical solution, but it can lead to several problems, including the risk of following too closely and not having a clear sense of the road ahead. Thus, the best practice is to use low-beam headlights and reduce speed for safety in heavy fog.