If a nonresident defendant fails to appear before the court or the traffic violations bureau either in person or by counsel in answer to a traffic complaint and citation upon which they have given their written promise to appear, the court shall mail a notice to the defendant at the address stated in the complaint and citation requesting them to abide by their promise and appear in person or by counsel on a day certain, and notifying them that their failure to appear after a written promise to do so is a misdemeanor for which they may also be charged. If the nonresident defendant fails to respond within 30 days after the date set in the notice, the court shall issue a warrant for their arrest and shall make an entry of the notification on the docket, and may add a charge against the defendant for failure to appear after a written promise to do so, and mark the case closed, subject to being reopened when the appearance of the defendant is thereafter obtained. (Ord. 5212 § 1 (Exh. E), 1999; 1957 code § 9.04.500(B).)