North Dakota Century Code 39-21-01 states that headlights are required anytime from sunset to sunrise and on farm vehicles on the highways from a half-hour after sunset to a half-hour before sunrise. They are also required when it is raining, snowing, sleeting, foggy or hailing or during other adverse driving or weather conditions when the conditions prevent a person from clearly making a vehicle discernible at a distance of 1,000 feet ahead.