No goods, wares or merchandise shall be placed, maintained or permitted for sale or show in or on any parking area, street or sidewalk beyond two feet from the front line of the lot, without first obtaining the written approval of the governing body. Such approval shall be granted only when such sale or show shall be a promotional activity not exceeding forty-eight hours and when participated in by a majority of firms seeking approval in their business areas. The governing body’s written approval shall specifically provide that no goods, wares, or merchandise shall be placed in such a manner as to leave less than a six-foot passageway for pedestrians. (Code 1975 § 11-368)