California Code, Vehicle Code - VEH § 2815

Any person who shall disregard any traffic signal or direction given by a nonstudent school crossing guard, appointed pursuant to Section 21100, or authorized by any city police department, any board of supervisors of a county, or the Department of the California Highway Patrol, when the guard is wearing the official insignia of such a school crossing guard, and when in the course of the guard's duties the guard is protecting any person in crossing a street or highway in the vicinity of a school or while returning thereafter to a place of safety, shall be guilty of an infraction and subject to the penalties provided in Section 42001.1.