(1) Windshields.
(A) The AS-1 area is the portion of the windshield based on driver seating configuration where the driver must have forward visibility.
(B) The windshield may also have a glazing shade band for driver comfort. This shading band is generally above the AS-1 area.
(C) An AS-1 line indicator, if present, denotes the boundary of the AS-1 area and the shading band. If the AS-1 line indicator is not present, generally, the shade band should not extend further than approximately five inches from the top of the windshield.
(D) The safety glass used for all vehicle windshields below the AS-1 line must have a 70% light transmission value.
(E) The glazing in the shade band area may have less than a 70% light transmission.
(c) After-market sunscreening devices. Standards and specifications described in this subsection apply to after-market sunscreening devices applied in conjunction with window glazing (vehicle safety glass) meeting federal standards.
(1) All installed after-market sunscreening devices will be measured in combination with the vehicle's original equipment (window glass).
(2) Windshields. No after-market sunscreening devices shall be installed, affixed, or applied to a vehicle windshield below the AS-1 line, or five inches from the top of the windshield if the AS-1 line annotation is not present.
(A) If an additional sunscreening device is used above the AS-1 area of the windshield, the light transmission value, in combination with the original windshield glazing, must be 25% or more.
(B) The luminous reflectance of any additional sunscreening devices used above the AS-1 area of the windshield must be 25% or less.
(C) An installed after-market sunscreening device used on the windshield may not be of a red, blue, or amber color.