A person shall not 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 highway, except:
1. Those which are screened by natural objects, plantings, fences, or other appropriate means obscuring them from view from the main-traveled portion of the highway.
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 to be promulgated by the department under the provisions of chapter 17A in accordance with the standards, criteria, and rules and regulations promulgated under authority of Title 23, United States Code.
4. Those which are not visible from the main-traveled portion of the highway.
Referred to in