Sec. 489(42). Restrictions as to tire equipment.
(a) Every solid rubber tire on a vehicle moved on any highway
shall have rubber on its entire traction surface at least one
inch thick above the edge of the flange of the entire periphery.
(b) No tire on a vehicle moved on a highway shall have on
its periphery any block, stud, flange, cleat or spike or any other
proturberance of any material other than rubber, which projects
beyond the tread of the traction surface of the tire, without its
being transported on a temporary track of plank or other suitable
material, except that it shall be permissible to use farm machinery
having protuberance which will not seriously injure the
highway, and to use tire chains of reasonable proportions when
required for safety because of snow, ice or other conditions tending
to cause a vehicle to slide or skid.
(c) The Mayor or Chief of Police may, in their discretion,
issue special permits authorizing the operation upon a highway
of traction engines or tractors having movable tracks with transverse
corrugations upon the periphery of such movable tracks.
