Louisiana Revised Statutes Tit. 32, § 364. Fenders and mudguards

A. Every motor vehicle, other than a motorcycle or motor-driven cycle, when operated upon a highway of this state, shall be equipped with fenders, covers, or such devices, including flaps or splash aprons, or fender flares to effectively minimize the spray or splash of water or mud or loose material on the highways to the rear of the vehicle unless the body of the vehicle or attachments thereto afford such protection. The width of such fenders, covers, or other devices shall be at least the width of the tires of the motor vehicle.

B. This Section does not apply to those vehicles exempt from registrations, nor to any other vehicle having an unladen weight of under one thousand five hundred pounds, nor to those vehicles which were not supplied with the equipment required in Subsection A of this Section at the time of manufacture, nor to trucks and farm vehicles handling and hauling agricultural and forestry products.