When are drivers required to use headlights?

Drivers are required to use headlights not just at night, but also in conditions where visibility is significantly reduced, such as during fog, rain, or snow. The primary purpose of headlights is to enhance visibility for the driver and to make the vehicle more visible to others on the road. When visibility drops below 500 feet, which is typically the case in inclement weather like fog or heavy rain, using headlights is crucial for safety. Furthermore, in adverse weather conditions like fog, rain, or snow, the function of headlights shifts from simply illuminating the road ahead to ensuring that other drivers can see your vehicle. Hence, the requirement to use headlights in both low visibility situations and during specific weather conditions underscores the importance of maintaining safety on the road in various driving environments.