Sec. 4-3.107.   Parking on County roads and highways and State highways.
   (a)   It shall be unlawful for any person to park or leave standing any unattended motor vehicle at the localities designated in accordance with the provisions of subsection (b)of this section.
   (b)   The Board, by resolution, shall designate the streets or roads, or portions thereof, upon which parking shall not be lawful. Parking restrictions shall be placed upon State highways only on a request, made in writing, by the Board to the Department of Public Works of the State. Parking restrictions upon County highways may be so designated at the discretion of the Board.
   (c)   Any provision of this section which regulates traffic or delegates the regulation of traffic upon State highways in any way for which the approval of the Department of Public Works of the State is required by State law shall cease to be operative six (6) months after receipt by the Board of written notice of withdrawal of approval of said Department of Public Works.
   (d)   Whenever the provisions of this section delegate authority to a County officer or authorize action by the Board to regulate traffic upon a State highway in any way which by State law requires the prior approval of the Department of Public Works of the State, no such officer shall exercise such authority, nor shall such action by the Board be effective, with respect to any State highway without the prior approval in writing of said Department of Public Works when and to the extent required by Divisions 11 and 15 of the Vehicle Code of the State.
   (e)   The provisions of this section shall be of no force or effect unless the localities designated by resolution of the Board, as provided in subsection (b)of this section are either plainly signposted or appropriately marked in the manner provided in Section 21351 of the Vehicle Code of the State to give warning of the prohibition of such parking. (§§ 1 through 5, Ord. 361)