SDCL § 32-15-2.1: Laminated glass required for windshield--Position--Minimum height--Exemption.

Every motor vehicle shall be equipped with an approved laminated safety glass windshield. The windshield shall be in such position that it affords continuous horizontal frontal protection to the driver and front seat occupants. The minimum vertical height of the unobstructed windshield glass shall be six inches. The provisions of this section do not apply to a motor vehicle manufactured prior to July 1, 1953, if the driver of the motor vehicle is wearing an eye protective device.