In what situation should you not use your high beams?

High beams are designed to illuminate the road much more brightly than low beams, which is beneficial in many scenarios, particularly in dark areas with little to no ambient light. However, in foggy weather conditions, using high beams can actually hinder visibility. This is because the bright light reflects off the moisture in the fog, creating a glare that can make it harder for drivers to see the road and any obstacles ahead.

In contrast, low beams are more effective in these conditions as they provide adequate illumination without causing excessive glare. Therefore, the correct understanding of when to avoid high beams is crucial for safe driving, especially in adverse weather like fog where visibility is compromised.