In which situation should you not use high-beam lighting?

High-beam lighting is designed to provide greater visibility in low-light conditions by illuminating the road and surrounding area more effectively than regular headlights. However, there are specific situations where using high beams can actually be counterproductive or even dangerous.

In fog, heavy rain, and snow, the light from high beams can reflect back off the precipitation, creating a glare that reduces visibility instead of enhancing it. Fog, in particular, consists of tiny water droplets that scatter light, making high beams less effective and causing a blinding effect. Similarly, rain and snow can cause the same scattering effect, disrupting a driver’s ability to see clearly.

In contrast, using high beams in clear weather is appropriate because there are no obstructions to visibility; the light can effectively enhance the driver's view of the road and surroundings. Thus, clear weather conditions present the best scenario for utilizing high beams for optimal visibility.