California Code, Vehicle Code - VEH § 22653

(a) Any peace officer, as that term is defined in Chapter 4.5 (commencing with Section 830) of Title 3 of Part 2 of the Penal Code, other than an employee directing traffic or enforcing parking laws and regulations, may remove a vehicle from private property located within the territorial limits in which the officer is empowered to act, when a report has previously been made that the vehicle has been stolen or a complaint has been filed and a warrant thereon issued charging that the vehicle has been embezzled.

(b) Any peace officer, as that term is defined in Chapter 4.5 (commencing with Section 830) of Title 3 of Part 2 of the Penal Code, may, after a reasonable period of time, remove a vehicle from private property located within the territorial limits in which the officer is empowered to act, if the vehicle has been involved in, and left at the scene of, a traffic accident and no owner is available to grant permission to remove the vehicle. This subdivision does not authorize the removal of a vehicle where the owner has been contacted and has refused to grant permission to remove the vehicle.

(c) Any peace officer, as that term is defined in Chapter 4.5 (commencing with Section 830) of Title 3 of Part 2 of the Penal Code, may, at the request of the property owner or person in lawful possession of any private property, remove a vehicle from private property located within the territorial limits in which the officer is empowered to act when an officer arrests any person driving or in control of a vehicle for an alleged offense and the officer is, by this code or other law, required or authorized to take, and does take the person arrested before a magistrate without unnecessary delay.