In foggy conditions, what lights should you use while driving?

Answer: B — Low beam lights

Using low beam lights in foggy conditions is essential for maintaining visibility while ensuring that you do not blind other drivers. High beam lights can reflect off the fog, rain, or snow, creating a glare that can significantly reduce your own visibility as well as that of vehicles approaching from the opposite direction. In contrast, low beam lights provide a more focused beam that illuminates the road directly in front of you without causing excessive reflection. This helps you see better and allows other drivers to see your vehicle more clearly as well, contributing to safer driving conditions. Emergency flashers are typically used when a vehicle is stopped or in distress, not for navigation through adverse weather, while turn signal lights serve a different purpose altogether as they signal your intention to change lanes or turn. Thus, low beam lights are the most practical choice for driving safely in fog.