When should you use low beam headlights?

Using low beam headlights in fog or heavy rain is essential for maintaining visibility and ensuring safety. This is because low beam headlights are designed to provide adequate illumination of the road without creating excessive glare that can impair the vision of other drivers, which is especially problematic in low visibility conditions like fog and heavy rain.

When using low beam headlights in fog, the light is directed downwards, reducing the reflection off of moisture droplets in the air. This helps prevent the headlights from bouncing back and causing a blinding effect for the driver. Additionally, in heavy rain, low beams can illuminate the road surface better while minimizing glare.

In contrast, high beam headlights can be too bright in these conditions, creating a situation where visibility is reduced for both the driver using the high beams and other road users. Therefore, low beams are the safest choice for driving in fog or heavy rain, as they enhance visibility without creating hazardous glare.