Sections 13a-123-1 to 13a-123-14 inclusive, apply to the erection and maintenance of outdoor advertising signs, displays, and devices within six hundred sixty feet of the edge of the right-of-way, the advertising message of which is visible from the main traveled way of any portion of the national system of interstate and defense highways, hereinafter referred to as interstate highways, limited access federal-aid primary highways, other limited access state highways and non-limited access federal-aid primary highways.
Conn. Agencies Regs. § 13a-123-1