Louisiana Revised Statutes Tit. 32, § 356. Windshields must be equipped with wiping and washing systems

A. The windshield on every motor vehicle, other than motorcycles or motor driven cycles, shall be equipped with a device for cleaning rain, snow or other moisture from the windshield, which device shall be so constructed as to be controlled or operated by the driver of the vehicle. In addition, every such motor vehicle manufactured or assembled after December 31, 1972, shall be equipped with a two-speed, power driven windshield wiping and washing system which will adequately clean rain, snow or other moisture from the windshield regardless of engine load and speed and so constructed as to be controlled and operated by the driver of the vehicle.

B. Every windshield wiping system upon a motor vehicle shall be maintained in good working order. The windshield washing system upon a vehicle that is not more than six years old from the date of manufacture or assembly shall be maintained in good working order.