Cal. Sts. & High. Code § 31865

As an alternative method of administration, upon request made to the legislative body by the owners of 50 percent of the assessed value of taxable land in each vehicle parking district created in the city, as shown by the last equalized county assessment roll, the parking places acquired and constructed for the use or benefit of the districts shall be managed, operated, and controlled by a commission appointed to have charge of all parking places in the city acquired pursuant to this part.