In fog, which lighting should you avoid using?

• A. Low beams
• B. Fog lights
• C. High beams
• D. Headlights off

Answer: (C)

In fog, bright light that shines directly ahead creates a glare as it reflects off the moisture, making it harder to see. High beams do this, so they should be avoided. Instead, use low beams, which shine farther down the road and reduce backscatter, helping you see the roadway without bouncing light back into your eyes. If your vehicle has fog lights, they’re aimed low and provide a wide, short beam that improves visibility of the road edges and lane markings in fog. Leaving lights off is unsafe because you’ll be far less visible to other drivers and you won’t see the road clearly.