Jurisdiction to control traffic is vested as follows:
This subsection shall not limit those counties which have the charter powers to provide and regulate arterial, toll, and other roads, bridges, tunnels, and related facilities from the proper exercise of those powers by the placement and maintenance of traffic control devices which conform to the manual and specifications of the Department of Transportation on streets and highways located within municipal boundaries.
Notwithstanding the provisions of subsection (2), each county shall have original jurisdiction to regulate parking, by resolution of the board of county commissioners and the erection of signs conforming to the manual and specifications of the Department of Transportation, in parking areas located on property owned or leased by the county, whether or not such areas are located within the boundaries of chartered municipalities.
Fla. Stat. § 316.006