Rules for vehicles tracking mud or dirt onto roads

No vehicle using the public highway shall track mud or dirt onto the traveled portion of the highway in quantities as will constitute a hazard when the roadway is wet, or obscure the painted paving markings thereon. In the event that mud or dirt is unavoidably tracked onto the highway, it shall be the duty of the operator of the offending vehicle to have the mud or dirt removed, or he or she shall place plainly visible signs warning of the hazard. The signs shall have black letters not less than six (6) inches in height on a yellow field carrying the warning "Slippery Mud Ahead" and having attached thereto one (1) or more red flag ten (10) inches wide by twelve (12) inches long, the signs to be placed no less than two hundred (200) feet, nor more than six hundred (600) feet on both approaches, provided that between thirty (30) minutes after sunset and thirty (30) minutes before sunrise there shall be required on the signs a red lantern or lanterns properly lighted in lieu of a red flag or flags. Upon removal of the mud or dirt from the highway, it shall be the duty of the operator of the vehicle tracking mud onto the highway to remove warning signs from the highway.