When should headlights be used in foggy conditions?

Answer: A — Use low beams to reduce glare and increase visibility

Using low beams in foggy conditions is the best practice because it helps to reduce glare, which can impair visibility. High beams tend to reflect off the fog, rain, or snow, creating a blinding effect that makes it harder to see. In fog, low beams project light closer to the ground, allowing drivers to see the road better without the light scattering back towards them. Additionally, relying solely on parking lights is insufficient for driving as they do not provide enough illumination for safe navigation. Turning off headlights and depending exclusively on fog lights can also be problematic, as fog lights are intended to supplement low beams rather than replace them. Therefore, activating low beams is crucial for maintaining visibility and ensuring safety in foggy conditions.