(a) "Street" or "highway" means the entire width between the boundary lines of every way open to the use of the public as a thoroughfare for purposes of vehicular travel.
(ORC 4511.01(BB))
(b) "Arterial street" means any United States or State numbered route, controlled-access highway, or other major radial or circumferential street or highway designated by local authorities within their respective jurisdictions as part of a major arterial system of streets or highways.
(ORC 4511.01(CCC))