1939.36.
(a) (1) Any privately owned vehicle rented by, or furnished to, any federal, state, or local law enforcement agency for the use of detaining, arresting, or transporting persons who have violated, or are suspected of having violated, any law, shall be required to have a temporary decal displaying the agency name and logo.
(2) The indicia or name of the governmental entity operating the vehicle shall be displayed in sharp contrast to the background on the front door panels and shall be of such size, shape, and color as to be readily legible during daylight hours from a distance of 50 feet. The governmental entity shall create and affix the temporary decal to the vehicle.
(b) Subdivision (a) does not apply to privately owned vehicles rented or otherwise furnished or loaned to any federal, state, or local law enforcement agency for any of the following purposes:
(1) An officer engaged in plainclothes operations.
(2) Exigent circumstances involving an imminent danger to persons or property, the escape of a perpetrator, or the destruction of evidence, including if the officer is responding to one of these circumstances while off duty.
(3) Privately owned vehicles rented to, or otherwise furnished or loaned to, a Special Weapons and Tactics or tactical team unit that is actively performing their tactical team responsibilities, including predeployment, staging, and training use.
(4) Privately owned vehicles rented to, or otherwise furnished or loaned to, an officer engaged in protective operations involving elected officials, judicial officers, or other designated dignitaries if the display of identification would compromise the safety, anonymity, or tactical effectiveness of the protection detail.
(5) An officer engaged in surveillance, active undercover operations, or investigative activities.
(6) (A) When the vehicle is used solely for the transport of a person who is already in lawful custodial status following arrest pursuant to a judicial warrant issued by a court of competent jurisdiction, or pursuant to a judicially issued extradition order, and is being transported to or from a custodial facility or transportation hub.
(B) This paragraph shall apply only where the officer reasonably determines that the display of a decal would compromise officer safety, public safety, or the security of the person being transported.
(C) This paragraph does not apply to the initial detention or arrest of an individual in the field.
(D) For purposes of this paragraph, “judicial warrant” or “judicially issued extradition order” does not include any civil, administrative, or executive warrant, detainer, or order not issued by a court of competent jurisdiction.
(c) (1) A failure to display a decal in accordance with this section shall subject the entity renting the vehicle from the private owner to liability that shall be enforced by a civil action, brought in the name of the people of California by the Attorney General, a district attorney, county counsel, or a city attorney, who may seek injunctive or declaratory relief.
(2) A prevailing plaintiff in an action shall be entitled to all reasonable attorney’s fees and costs.
(d) The terms and conditions of the rental car contract shall specify that compliance with state law is mandatory. The contract may include a term requiring the law enforcement agency to indemnify the owner of the private vehicle.
(e) Subdivisions (a) and (d) do not apply to any rental car contract entered into prior to January 1, 2027.