In which scenario are fog lamps permitted to be used?

Fog lamps are specifically designed to illuminate the road directly in front of a vehicle during low-visibility conditions such as fog, rain, or snow. When using fog lamps, they should be employed in conjunction with low beam headlights. This combination ensures that the light is aimed downward and does not reflect back into the driver’s eyes, which is more likely to occur if high beams are used.

The rationale behind this guideline is that high beams can scatter the light, creating a wall of glare in foggy or inclement weather, making it more difficult for drivers to see. Therefore, it is necessary to keep fog lights paired with low beams for optimal visibility and safety during such conditions. This restricts their use to instances where the low beams are active, rather than being used at any time the vehicle is in motion or in conjunction with high beams, which may impair visibility rather than enhance it.