When should you use high-beam headlights?

• A. Always use high beams at night
• B. In fog
• C. When there is oncoming traffic
• D. On dark rural roads with no oncoming traffic; switch to low beams when another vehicle is close or approaching

Answer: (D)

High beams are meant for situations where there’s no street lighting and the road is very dark, so you can see farther down the road and spot hazards earlier. On dark rural roads with no oncoming traffic, you can use them to maximize visibility. The moment another vehicle is close or approaching, switch to low beams to avoid blinding the driver ahead. In fog, high beams do more harm by reflecting off the fog and reducing visibility, so low beams (or fog lights, if available) are the better choice. So the best approach is to use high beams on dark, unlit roads with no traffic, and switch to low beams when another vehicle is nearby.