(1) A certificate or other paper required or allowed by law to be displayed;

(2) The label attached to a window showing the price, estimated mileage and other federally mandated information commonly known as the manufacturer's suggested retail price label;

(3) Sun-screening or window-tinting material along a 4-inch strip at above the AS-1 line in the top portion of the windshield or, if there is no AS-1 line in the top portion of the windshield, along a 5-inch strip at the top of the windshield . For purposes of this paragraph, "AS-1 line" means the marking that includes the letters "AS," the number "1" and an arrow that is required to be placed on certain safety glazing materials pursuant to 49 Code of Federal Regulations, Section 571.205 (2006); or

(4) Motor vehicles for which the Chief of the State Police has granted an exception because the health of the owner or a person who usually occupies the vehicle is adversely affected by sunlight. The Chief of the State Police may, upon proper application, provide the owner of a motor vehicle with a certificate of exemption that must be displayed upon the request of a law enforcement officer.