Cal. Veh. Code § 20012
All required accident reports, and supplemental reports, shall be without prejudice to the individual so reporting and shall be for the confidential use of the Department of Motor Vehicles and the Department of the California Highway Patrol, except that the Department of the California Highway Patrol or the law enforcement agency to whom the accident was reported shall disclose the entire contents of the reports, including, but not limited to, the names and addresses of persons involved or injured in, or witnesses to, an accident, the registration numbers and descriptions of vehicles involved, the date, time and location of an accident, all diagrams, statements of the drivers involved or occupants injured in the accident and the statements of all witnesses, to any person who may have a proper interest therein, including, but not limited to, the driver or drivers involved, or the guardian or conservator thereof, the parent of a minor driver, the authorized representative of a driver, or to any named person injured therein, the owners of vehicles or property damaged thereby, persons who may incur civil liability, including liability based upon a breach of warranty arising out of the accident, and any attorney who declares under penalty of perjury that he or she represents any of the above persons.
A request for a copy of an accident report shall be accompanied by payment of a fee, provided such fee shall not exceed the actual cost of providing the copy.
Ca. Veh. Code § 20012