When driving in fog, which lights should be used?

Using low beam headlights while driving in fog is crucial because high beam headlights can actually reduce visibility. When high beams reflect off the moisture in the fog, they can create a glare that impairs your ability to see the road ahead, making it more difficult to navigate. Low beams, on the other hand, direct light down towards the road, helping illuminate the area immediately in front of the vehicle without producing excessive glare. This allows drivers to maintain a clearer view of the road and any potential obstacles.

Parking lights and hazard lights serve different purposes, primarily indicating that a vehicle is stationary or in a situation where caution is needed, but they do not provide adequate illumination for navigating through fog. Therefore, using low beams under these conditions enhances safety by improving visibility without adding to the challenges created by the fog.