Under what conditions are headlights required?

Headlights are required at any time you cannot see 500 feet due to various conditions, such as rain, fog, dust, or other obstructions. This requirement is in place to ensure visibility and safety on the road. When visibility is reduced, using headlights helps you see the road ahead and allows other drivers to see your vehicle, thereby reducing the likelihood of accidents.

Other options suggest more restrictive or situational uses of headlights, such as only during heavy rain, at night, or during fog. However, visibility can be compromised in various ways, not just those specific conditions, so responsive use of headlights at any time visibility drops below 500 feet is crucial for safe driving. This comprehensive rule helps adapt to changing weather and road conditions, emphasizing driver safety and awareness.