When is it necessary to use headlights in Maryland?

Using headlights in Maryland is essential for ensuring visibility and safety on the road. They are required from sunset to sunrise, which helps drivers see clearly during nighttime driving when natural light is diminished. In addition to nighttime use, headlights must also be used during adverse weather conditions such as rain, fog, snow, or sleet. These conditions can significantly reduce visibility, and using headlights allows other drivers to see your vehicle better. This combination of requirements helps to enhance safety for all road users.

The other options do not fully encompass the legal requirements for headlight use in Maryland. For instance, headlights are not limited to just nighttime use, nor are they only necessary in poor weather conditions like rain or snow. Additionally, while it might be advisable to use headlights during the day in overcast weather, it is not a legally mandated requirement, making that option incomplete.