When driving in fog, what headlights should you switch on?

When driving in fog, using low beam headlights is the most effective and safest choice. Low beams provide adequate illumination of the road immediately in front of your vehicle without causing excessive glare, which can compound visibility issues in foggy conditions.

In fog, the rays from high beam headlights can reflect off the moisture in the air, creating a blinding effect that hinders your vision. Fog lights, while designed to illuminate the road close to the vehicle, are not always suitable for use in heavy fog either, as they may not provide the broader coverage necessary. Parking lights offer minimal illumination and do not enhance visibility for driving, making them inappropriate for navigating through fog.

Ultimately, low beams help the driver see the road better while minimizing the risk of glare that can impair both the driver’s vision and that of other road users.