Cal. VEH § 42200

(a) Of the total amount of fines and forfeitures received by a city under Section 1463 of the Penal Code that proportion which is represented by fines and forfeitures collected from any person charged with a misdemeanor under this code following arrest by an officer employed by a city, shall be paid into the treasury of the city and deposited in a special fund to be known as the “Traffic Safety Fund,” and shall be used exclusively for official traffic control devices, the maintenance thereof, equipment and supplies for traffic law enforcement and traffic accident prevention, and for the maintenance, improvement, or construction of public streets, bridges, and culverts within the city, but the fund shall not be used to pay the compensation of traffic or other police officers. The fund may be used to pay the compensation of school crossing guards who are not regular full-time members of the police department of the city.

(b) For purposes of this section, “city” includes any city, city and county, district, including any enterprise special district, community service district, or county service area engaged in police protection activities as reported to the Controller for inclusion in the 1989–90 edition of the Financial Transactions Report Concerning Special Districts under the heading of Police Protection and Public Safety, authority, or other local agency (other than a county) which employs persons authorized to make arrests or to issue notices to appear or notices of violation which may be filed in court.