California Code, Vehicle Code - VEH § 40150

Whenever any vehicle or combination of vehicles is found to be in an unsafe mechanical condition or is not equipped as required by this code, and a notice to appear is issued or a complaint filed for such violation, the notice to appear or the complaint may require that the person to whom the notice to appear is issued or against whom the complaint is filed shall produce in court satisfactory evidence that the vehicle or its equipment has been made to conform with the requirements of this code.