The following regulations on permitted and required accessory off-street parking spaces and accessory bicycle parking spaces are adopted in order to provide parking spaces off the streets sufficient to give necessary access to developing centers of commerce outside the high density central areas, to reduce traffic congestion caused by parking on the streets, to prevent substantial amounts of traffic from circulating in and parking on residential streets surrounding commercial centers, to provide for a higher standard of commercial development within the City and thus to promote and protect public health, safety and general welfare.