(1) The Department shall mark parking spaces adjacent to parking meters and vehicles shall be parked within such markings. It shall be unlawful to park a vehicle across any marking which designates a parking space; provided, however, that a vehicle so large that it cannot be parked within a single parking space, may be parked in two parking spaces provided that two parking meters are put in operation.

(2) On any street listed in subsection 12-1004(3), the following shall apply:

(a) No person shall park a motorcycle within a metered parking space if there is already a motorcycle or other vehicle parked in such metered space.

(b) No person shall park a motorcycle within a metered parking space unless the motorcycle is parked parallel to and within twelve inches (12") of the curb, and within twenty-four inches (24") of the front end of such metered parking space.

(3) Designated streets.

(a) Any street within the area bounded by Front street, Lombard street, Eleventh street, and Bainbridge street, including the streets making up the boundary of such area;

(b) Any street within the area bounded by Front street, Pine street, Second street, and Lombard street, including the streets making up the boundary of such area.