When driving in fog, heavy rain, or snow at night, which lights should you use for better visibility?

Using lower headlight beams in conditions like fog, heavy rain, or snow at night is the best practice for several reasons. Lower headlight beams direct light toward the road without creating excessive glare that can reflect off of moisture particles in the air, such as fog, rain, or snow. This glare can impede visibility, making it harder to see both the road and any potential hazards.

Lower beams provide adequate lighting for the road while minimizing the scattering of light that occurs in these conditions. By using lower beams, drivers are more likely to see clearly without being blinded by their own headlights or contributing to the poor visibility conditions that already exist.

Fog lights, while effective in certain situations, are specifically designed to cast a wide, low beam of light to illuminate the area directly in front of the vehicle, but they are typically used in conjunction with lower headlight beams rather than being a standalone solution for all situations. High beam headlights are not advisable in fog or heavy precipitation because they can create a white wall effect, reducing visibility further. Daytime running lights are not sufficient for night driving because they do not provide enough illumination for low-light conditions, especially when adverse weather is involved.