When driving in heavy snow or fog, what should a driver do with their headlights?

Using low beam lights in heavy snow or fog is essential for maintaining visibility while also minimizing glare. High beam lights can reflect off of the snowflakes or fog droplets, creating a blinding effect for the driver and making it harder to see. Low beam headlights provide adequate illumination of the road directly in front of the vehicle without contributing to the scattering of light that intensifies poor visibility conditions.

Moreover, turning off headlights altogether can severely reduce visibility, especially when navigating through low-light conditions created by snow or fog. Flashing headlights can confuse other drivers and does not contribute to safe navigation. Therefore, the most effective and safest choice in these situations is to use low beam lights. This practice helps enhance visibility for the driver while also making the vehicle more visible to others, providing a safer driving experience overall.