California Code, Streets and Highways Code - SHC § 1953

(a) A city or county may, by ordinance or resolution, adopt a golf cart transportation plan.

(b) The transportation plan shall have received a prior review and the comments of the appropriate transportation planning agency designated under subdivision (a) or (b) of Section 29532 of the Government Code and any agency having traffic law enforcement responsibilities in that city or county.

(c) The transportation plan shall not include the use of any state highway, or any portion thereof, except that a crossing of, or a golf cart lane along, a state highway may be included in the plan, if authorized by the department and the law enforcement agency having primary traffic enforcement responsibility of that highway or portion thereof.