Cal. Veh. Code § 20018

Every law enforcement agency having traffic law enforcement responsibility as specified in subdivision (a) of Section 830.1 and in subdivision (a) of Section 830.2 of the Penal Code may develop, adopt, and implement a written policy for its officers to provide assistance to disabled motorists on highways within its primary jurisdiction. A copy of the policy, if adopted, shall be available to the public upon request.