It shall be unlawful for any person to park or otherwise leave unattended upon any public street or thoroughfare within the county any vehicle, motor or otherwise, used for the hauling or transporting of any solid waste for any period of time in excess of that which is necessary in the loading or unloading of such vehicle. Any violation of this section shall be punished as a class B violation as set forth in section 1-19 of chapter 1 of the County Code. (1981 L.M.C., ch. 37, § 1; 1983 L.M.C., ch. 22, § 53.)