Interpretation ID: aiam3031
Jr.
Director of Design
Cars & Concepts
Inc.
12500 E. Grand River
Brighton
MI 48116;
Dear Mr. Pare: This responds to your May 21, 1979, letter concerning the markin requirements for vehicle windshields having shade bands. You asked whether the 'A S1' marking symbol required by Safety Standard No. 205, *Glazing Materials*, can be placed on the tint band itself rather than on the glazing material below the band, if the tint band is a flexible sheet applied on top of the glazing.; Safety Standard No. 205 incorporates by reference the American Nationa Standard 'Safety Code for Safety Glazing Materials', ANS Z26. The ANS Z26 standard requires special additional markings for glazing that has shade bands or tinted areas:; >>>'Glazing materials, which in a single sheet of material, ar intentionally made with an area having a luminous transmittance of not less than 70 percent (Test NO. 2), adjoining an area which has less than 70-percent luminous transmittance, shall be permanently marked at the edge of the sheet to show the limits of the area which is intended to comply with Test No. 2. The markings shall be A S1 or A S2, etc., the direction of the arrow indicating the portion of the material which complies with Test No. 2 and the number indicating the item with which that portion of the sheet complies ....'<<<; You will note from the quoted portion of this specification that th special marking is only required if the tinted shade band area of the windshield has a luminous transmittance of less than 70 percent. Your letter states that the transparent windshield tint band that you intend to use allows 70 percent light transmission. Therefore, you would not be required to use the 'A S1' special marking either on the band itself or on the glazing.; For removable tint bands of this type that do not have a 70 percen light transmission, however, the agency would permit the 'A S1' marking to be on the tint band itself rather than on the underlying glazing, provided the marking is located at the lowest possible portion of the tint band.; Sincerely, Frank Berndt, Chief Counsel