In AS 19.25.080 - 19.25.180,

(1) “billboards” means any signboards, signs, displays, notices, or forms of outdoor advertising that do not strictly comply with the provisions of AS 19.25.075 - 19.25.180, or with any permit or permits issued pursuant to AS 19.25.075 - 19.25.180;

(2) “interstate system” means that portion of the National System of Interstate and Defense Highways located in this state, as officially designated, or as may hereafter be so designated, by the commissioner, and approved by the secretary of transportation (or by the secretary of commerce before the effective date of the transfer of functions under Public Law 89-670 (80 Stat. 931)), under the provisions of 23 U.S.C.;

(3) “outdoor advertising” includes any outdoor sign, display, or device used to advertise, attract attention, or inform and which is visible to a person on the main-traveled way of a highway of the interstate, primary, or secondary systems in this state, whether by printing, writing, painting, picture, light, drawing, or whether by the use of figures or objects, or a combination of these, or any other thing designed, intended, or used to advertise, inform, or attract attention;

(4) “primary system” or “secondary system” means that portion of connected main highways, as officially designated, or as may hereafter be so designated, by the commissioner, and approved by the secretary of transportation (or by the secretary of commerce before the effective date of the transfer of functions under Public Law 89-670 (80 Stat. 931)), under the provisions of 23 U.S.C.