Amending Title 12 of The Philadelphia Code, entitled "Traffic Code," by prohibiting the operation of a motorcycle or motor-driven cycle with certain types of aftermarket mufflers, and by prohibiting businesses and other persons from installing such prohibited types of aftermarket mufflers, and providing for fines and penalties; and amending Chapter 19-2600 of The Philadelphia Code, entitled "Business Privilege Taxes," by providing for the revocation of the business privilege license of a business that violates the prohibition against the installation of certain prohibited mufflers; all under c — Open Common Ground