CA Veh Code § 40509.5 (2021)
2021 California Code|Vehicle Code - VEH|DIVISION 17 - OFFENSES AND PROSECUTION|CHAPTER 2 - Procedure on Arrests|ARTICLE 2 - Release Upon Promise to Appear|Section 40509.5.

40509.5.  (a) Except as required under subdivision (b), if, with respect to an offense described in subdivision (d), a person has violated his or her written promise to appear or a lawfully granted continuance of his or her promise to appear in court or before the person authorized to receive a deposit of bail, or violated an order to appear in court, including, but not limited to, a written notice to appear issued in accordance with Section 40518, the magistrate or clerk of the court may give notice of the failure to appear to the department for a violation of this code, a violation that can be heard by a juvenile traffic hearing referee pursuant to Section 256 of the Welfare and Institutions Code, or a violation of any other statute relating to the safe operation of a vehicle, except violations not required to be reported pursuant to paragraphs (1), (2), (3), (6), and (7) of subdivision (b) of Section 1803. If thereafter the case in which the promise was given is adjudicated or the person who has violated the court order appears in court and satisfies the order of the court, the magistrate or clerk of the court hearing the case shall sign and file with the department a certificate to that effect.(b) If a person charged with a violation of Section 23152 or 23153, or Section 191.5 of the Penal Code, or subdivision (a) of Section 192.5 of that code has violated a lawfully granted continuance of his or her promise to appear in court or is released from custody on his or her own recognizance and fails to appear in court or before the person authorized to receive a deposit of bail, or violated an order to appear in court, the magistrate or clerk of the court shall give notice to the department of the failure to appear. If thereafter the case in which the notice was given is adjudicated or the person who has violated the court order appears in court or otherwise satisfies the order of the court, the magistrate or clerk of the court hearing the case shall prepare and forward to the department a certificate to that effect.(c) Except as required under subdivision (b), the court shall mail a courtesy warning notice to the defendant by first-class mail at the address shown on the notice to appear, at least 10 days before sending a notice to the department under this section.(d) If the court notifies the department of a failure to appear pursuant to subdivision (a), no arrest warrant shall be issued for an alleged violation of subdivision (a) of Section 40508, unless one of the following criteria is met:(1) The alleged underlying offense is a misdemeanor or felony.(2) The alleged underlying offense is a violation of any provision of Division 12 (commencing with Section 24000), Division 13 (commencing with Section 29000), or Division 15 (commencing with Section 35000), required to be reported pursuant to Section 1803.(3) The driver’s record does not show that the defendant has a valid California driver’s license.(4) The driver’s record shows an unresolved charge that the defendant is in violation of his or her written promise to appear for one or more other alleged violations of the law.(e) Except as required under subdivision (b), in addition to the proceedings described in this section, the court may elect to notify the department pursuant to subdivision (b) of Section 40509.(f) A violation subject to Section 40001 that is the responsibility of the owner of the vehicle shall not be reported under this section.(Amended by Stats. 2017, Ch. 17, Sec. 54. (AB 103) Effective June 27, 2017.)