When driving in fog, you should switch on your___.

• A. high beams
• B. parking lights
• C. hazard lights
• D. low beams

Answer: (D)

When driving in fog, use low beams because fog droplets scatter light, and the bright, upward throw of high beams creates a blinding glare that makes it harder to see. Low beams direct light down toward the road and ahead, improving contrast with the road surface and helping you spot lane markings, edges, and other vehicles without reflecting back into your eyes. Parking lights are too dim to be effective in fog, and hazard lights are for signaling a problem or emergency, not for normal driving in reduced visibility. So keeping low beams on helps you see more of the road and stay safer.