(b) Window Tinting Restrictions. – A window of a vehicle that is operated on a highway or a public vehicular area shall comply with this subsection. The windshield of the vehicle may be tinted only along the top of the windshield and the tinting may not extend more than five inches below the top of the windshield or below the AS1 line of the windshield, whichever measurement is longer. Provided, however, an untinted clear film which does not obstruct vision but which reduces or eliminates ultraviolet radiation from entering a vehicle may be applied to the windshield. Any other window of the vehicle may be tinted in accordance with the following restrictions: