(a) Traffic or other public notice or warning required by a valid and applicable federal, state, or local law, regulation, or ordinance, such as the following: legal notices, railroad crossings, danger or other emergency signs.
(b) Signs painted on or permanently attached to motor vehicles which are legally licensed and primarily used on the highways for commercial or business purposes such as transporting of persons, goods or equipment: provided that no such vehicle displaying a sign may be parked within the required front setback of any lot or on any public right of way for the purpose of advertising any service, product or facility.
(c) Private traffic control signs such as stop, yield, in, out, drive-in window entrance, exit, etc. as long as the sign meets Department of Transportation standards and contain no advertising, logo, or name for the business or use.
(d) Holiday lights and decorations with no commercial message, but only between November 15 and January 15.
(e) Flags of the United States, the state, city, foreign nations having diplomatic relations with the United States, and any other flag adopted or sanctioned by an elected legislative body of competent jurisdiction provided that such a flag shall be flown in accordance with protocol established by the Congress of the United States for the Stars and Stripes. Any flag not meeting any one or more of these conditions shall be considered a banner or a pennant sign and shall be subject to regulation as such.