Under what circumstances are drivers required to switch on their headlights?

Answer: C — Both A and B

Drivers are required to switch on their headlights not only during nighttime but also when weather conditions necessitate improved visibility. This includes situations such as rain, snow, fog, or any other conditions that limit visibility. Headlights help other drivers see your vehicle, making the road safer for everyone. While it's mandatory to turn on headlights at night, simply relying on this time frame is insufficient. Good driving practice dictates that any time visibility is compromised due to environmental factors, headlights should be used. This is especially crucial in foggy conditions, as well as in rain or snow, where low light can obscure a driver’s vision. Hence, the requirement encompasses both night driving and adverse weather conditions, solidifying the need for headlights at various times, reinforcing safe driving practices.