It shall be unlawful to move any tractor engine, tractor, or other vehicle having wheels to the surface of which are attached mudlugs, ice spurs, spikes, chains, or wheels with narrow steel tires upon or across any street that is surfaced with hardsurfacing material, without first laying planks of at least two-inch thickness over the surface of such street in a manner so as to protect such street from contact with such vehicle.
(Ord. 200, passed 8-5-1946) Penalty, see § 70.99