Driving or Parking on Public Grounds—Vehicle Code 21113
21113. (a) No person shall drive any vehicle or animal, nor shall any person stop, park, or leave standing any vehicle or animal, whether attended or unattended, upon the driveways, paths, parking facilities, or the grounds of any public school, state university, state college, unit of the state park system, county park, municipal airport, rapid transit district, transit development board, transit district, joint powers agency operating or managing a commuter rail system, or any property under the direct control of the legislative body of a municipality, or any state, county, or hospital district institution or building, or any educational institution exempted, in whole or in part, from taxation, or any harbor improvement district or harbor district formed pursuant to Part 2 (commencing with Section 5800) or Part 3 (commencing with Section 6000) of Division 8 of the Harbors and Navigation Code, a district organized pursuant to Part 3 (commencing with Section 27000) of Division 16 of the Streets and Highways Code, or state grounds served by the Department of the California Highway Patrol, or any property under the possession or control of a housing authority formed pursuant to Article 2 (commencing with Section 34240) of Part 2 of Division 24 of the Health and Safety Code, except with the permission of, and upon and subject to any condition or regulation which may be imposed by the legislative body of the municipality, or the governing board or officer of the public school, state university, state college, county park, municipal airport, rapid transit district, transit development board, transit district, joint powers agency operating or managing a commuter rail system, or state, county, or hospital district institution or building, or educational institution, or harbor district, or a district organized pursuant to Part 3 (commencing with Section 27000) of Division 16 of the Streets and Highways Code, or housing authority, or the Director of Parks and Recreation regarding units of the state park system or the state agency with jurisdiction over the grounds served by the Department of the California Highway Patrol.
(b) Every governing board, legislative body, or officer shall erect or place appropriate signs giving notice of any special conditions or regulations that are imposed under this section and every board, legislative body, or officer shall also prepare and keep available at the principal administrative office of the board, legislative body, or officer, for examination by all interested persons, a written statement of all those special conditions and regulations adopted under this section.
(c) When any governing board, legislative body, or officer permits public traffic upon the driveways, paths, parking facilities, or grounds under their control then, except for those conditions imposed or regulations enacted by the governing board, legislative body, or officer applicable to the traffic, all the provisions of this code relating to traffic upon the highways shall be applicable to the traffic upon the driveways, paths, parking facilities, or grounds.
(d) With respect to the permitted use of vehicles or animals on property under the direct control of the legislative body of a municipality, no change in the use of vehicles or animals on the property, which had been permitted on January 1, 1976, shall be effective unless and until the legislative body, at a meeting open to the general public, determines that the use of vehicles or animals on the property should be prohibited or regulated.
(e) A transit development board may adopt ordinances, rules, or regulations to restrict, or specify the conditions for, the use of bicycles, motorized bicycles, skateboards, and roller skates on property under the control of, or any portion of property used by, the board.
(f) A public agency, including, but not limited to, the Regents of the University of California and the Trustees of the California State University, may adopt rules or regulations to restrict, or specify the conditions for, the use of bicycles, motorized bicycles, skateboards, and roller skates on public property under the jurisdiction of that agency.
(g) “Housing authority,” for the purposes of this section, means a housing authority located within a county with a population of over six million people, and any other housing authority that complies with the requirements of this section.