Arkansas Code Title 27. Transportation § 27-66-306. Six functional classes

(1) Class I

Rural Systems: Interstate freeways.

Municipal Systems: Interstate freeways.

Level of Service: Provide basic interstate service; link major cities;

(2) Class II

Rural Systems: Other principal arterial highways.

Municipal Systems: Other freeways and expressways.

Level of Service: Provide high level of interstate and intrastate service; connect major generators of internal city traffic;

(3) Class III

Rural System: Minor arterial highways.

Municipal Systems: Other principal arterial streets.

Level of Service: Serve trans-state travel to and through principal cities; provide a system for the major traffic generators within a city;

(4) Class IV

Rural Systems: Major collector roads.

Municipal Systems: Minor arterial streets.

Level of Service: Provide connections to and through the large centers of population within the state;

(5) Class V

Rural Systems: Minor collector roads.

Municipal Systems: Collector streets.

Level of Service: Provide intercounty service; serve the economic and state park areas not served by a higher system; collect and distribute traffic to and from major streets; provide intracounty service to and into population centers and other recreational and industrial areas; and

(6) Class VI

Rural Systems: Local roads.

Municipal Systems: Local streets.

Level of Service: Service small rural communities; provide access to residential areas, subdivisions, and neighborhoods within cities; provide direct access to adjacent properties in rural areas and within cities.