Why is it so difficult to see when driving through a fog at night?

Driving through fog at night is particularly challenging because fog reduces visibility by scattering light, which can create a dull, uniform gray appearance. Headlights can reflect off the fog droplets, creating a glare that further obscures your view. Additionally, the low contrast between objects and the fog makes it hard to distinguish between the road, potential hazards, and other vehicles. These factors combined can significantly impair depth perception and reaction time, increasing the risk of accidents.