S.C. Code Regs. 38-393.60. Glazing in specified openings

(a) Glazing material. Glazing material used in windshields, windows, and doors on a motor vehicle manufactured on or after December25, 1968, shall at a minimum meet the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 205 in effect on the date of manufacture of the motor vehicle. The glazing material shall be marked in accordance with FMVSS No. 205 (49 CFR 571.205, S6) (b) Windshield required. Each bus, truck and truck-tractor shall be equipped with a windshield. Each windshield or portion of a multi-piece windshield shall be mounted using the full periphery of the glazing material. (c) Windshield condition. With the exception of the condition listed in paragraphs (c)(1), (c)(2), and (c)(3), each windshield shall be free of discoloration or damage in the area extending upward from the height of the top of the steering wheel (excluding a 51 mm (2 inch) border at the top of the windshield) and extending from a 25 mm (1 inch) border at each side of the windshield or windshield panel. Exception: (1) Coloring or tinting which meets the requirements of paragraph (d); (2) Any crack that is not intersected by any other cracks; (3) Any damaged area which can be covered by a disc 19 mm (3.4 inch) in diameter if not closer than 76 mm (3 inches) to any other similarly damaged area. (d) Use of vision reducing matter. No motor vehicle may be operated with any label, sticker, decalcomania, or other vision reducing matter covering any portion of its windshield or windows at either side of the driver's compartment, except that stickers required by law may be affixed at the bottom of the windshield, provided no portion of any label, sticker, decalcomania, or other vision reducing matter may extend upward more than 4 1/2 inches from the bottom of such windshield.