Which option best describes the rule for dimming headlights at night?

• A. Dim within 500 feet of an oncoming vehicle or within 300 feet of a following vehicle
• B. Dim within 300 feet of an oncoming vehicle or within 600 feet of a following vehicle
• C. Always use high beams if there is no traffic
• D. Dim only when you can see a pedestrian

Answer: (A)

Dimming headlights at night is about reducing glare for other drivers while still letting you see ahead. The rule is to switch to low beams whenever you are within 500 feet of an oncoming vehicle or within 300 feet of the vehicle you are following. This keeps glare from your high beams away from the approaching driver and from the driver in front of you, helping everyone see more clearly.

If you’re not within those distances, you can use high beams to improve visibility. The other options don’t match these distances or describe a different behavior (for example, using high beams only when no traffic is present, or dimming based on pedestrians), so they aren’t correct.