California Code, Public Utilities Code - PUC § 120266

(a) The board may enter into contracts with any city in the County of San Diego and with the County of San Diego to license or regulate by ordinance any for-hire vehicle services rendered wholly within the city's corporate limits or within the unincorporated area of the county.

(b) The board shall levy the fees necessary to recover the full cost of licensing and regulating these services.

(c) For purposes of this section, “for-hire vehicle services” means vehicles, other than public transportation vehicles, transporting passengers over public streets for compensation, which includes taxicabs, passenger jitney service, low-speed vehicles, nonemergency medical vehicles to the extent that the commission does not have regulatory authority, charters, and sightseeing vehicles.  The term “for-hire vehicle services” does not include any public transportation services operated by the North County Transit District established pursuant to Division 11.5 (commencing with Section 125000).