The department is responsible for the control of junkyards only on those primary highways that are state roads. For all primary highways it shall be unlawful for any person to establish, operate, or maintain any junkyard, any portion of which is within 1,000 feet of the nearest edge of the right of way of any interstate or federal-aid primary highway, except:
(1) Those which are screened by natural objects, plantings, fences, or other appropriate means or which are otherwise removed from sight so as not to be visible from the main traveled way of such highway systems;
(2) Those located within areas which are zoned for industrial use under authority of law;
(3) Those located within unzoned industrial areas, which areas shall be determined from actual land uses and defined by regulations promulgated by the commissioner; and
(4) Those which are not visible from the main traveled way of the systems.