Mississippi Code Title 65. Highways, Bridges and Ferries § 65-5-3

(a) “Controlled-access facility”--A highway or street especially designed for through traffic, and over, from, or to which owners or occupants of abutting land or other persons have no right or easement, or only a controlled right or easement, of access, light, air, or view by reason of the fact that their property abuts upon such controlled-access facility or for any other reason. Such highways or streets may be expressways or freeways open to use by all customary forms of street and highway traffic, or they may be parkways from which trucks, busses, and other commercial vehicles shall be excluded.

(b) “Expressway”--A divided arterial highway for through traffic with full or partial control of access and generally with grade separations at intersections.

(c) “Freeway”--An expressway with full control of access.

(d) “Grade separation”--A crossing of two highways, or a highway and railroad, at different levels.

(e) “Interchange”--A grade separated intersection with one or more turning roadways for travel between the intersecting highways, roads, or streets.

(f) “Parkway”--An arterial highway for non-commercial traffic, with full or partial control of access.

(g) “Service road” or “local service road”--A highway, road, or street which is auxiliary to and located on the side of another highway, road, or street for service to abutting property and adjacent areas and for control of access to such other highway, road, or street.