No person may establish, operate, or maintain a junkyard any portion of which is within one thousand feet of the nearest edge of the right-of-way of any interstate or federal-aid primary highway, except the following:
(1) Those which are screened by natural objects, plantings, fences, or other appropriate means so as not to be visible from the main-traveled way of the system or otherwise removed from sight;
(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 rules adopted by the department and approved by the United States secretary of transportation; and
(4) Those which are not visible from the main-traveled way of the system.
[ 1984 c 7 § 217; 1971 ex.s. c 101 § 3.]