Idaho Statutes Title 40. Highways and Bridges § 40-110. Definitions--I

(1) “Improved highway” means a graded and drained earth traveled way or better, to include one graded and graveled or with paved surface, and a graded and drained earth highway means a traveled way of natural earth, aligned and graded to permit reasonably convenient use by motor vehicles, and drained by a longitudinal and transverse system, natural or artificial, sufficient to prevent serious impairment of the highway by surface water.

(2) “Individual” means a person who is not a member of a family.

(3) “Industrial activities.” (See “Unzoned commercial or industrial areas,” section 40-122, Idaho Code)

(4) “Industrial areas, unzoned.” (See “Unzoned commercial or industrial areas,” section 40-122, Idaho Code)

(5) “Information center” means any area or site established and maintained at a safety rest area on an interstate or primary highway by or under the supervision or control of the department, where panels for the display of advertising and informational signs may be erected and maintained.

(6) “Interchange area” means the commencing or ending at the beginning of pavement widening at the exit or entrance to the main traveled way of an interstate, primary freeway, or turnpike project.

(7) “Interstate system” or “interstate highway” means any portion of the national system of interstate and defense highways located within the state, as officially designated or as may be hereafter so designated, by the Idaho transportation board, and approved by the secretary of transportation, pursuant to the provisions of title 23, U.S. Code, “Highways”.