It shall be a misdemeanor to fail to respond to a notice of civil infraction issued by a police officer or other official of the city authorized to issue civil notices of infraction. In any court proceeding to enforce this section, the city shall have the burden of proving beyond a reasonable doubt both that the violator was personally served with the notice of civil infraction and that the violator willfully failed to respond to the infraction by either appearing in court as directed or by paying the fine for the infraction. (Ord. 5677 § 1, 2002.)