a. In any proceeding alleging a violation of any of the provisions of this Code or the Phoenix Fire Code governing the standing or parking of a vehicle, the person in whose name such vehicle is registered shall be prima facie responsible for such violation and subject to a civil sanction therefor.

b. The provisions of subsection (a) of this section shall apply to those persons in whose names such vehicle is jointly registered. Said persons shall be jointly and severally prima facie responsible for such a violation and subject to a civil sanction therefor. (Code 1962, § 37-50.02; Ord. No. G-1938, § 1; Ord. No. G-2231, § 1; Ord. No. G-2753, § 3; Ord. No. G-3543, § 1)