Zone 1 – Start at the junction of Interstate 40 and the Arkansas-Oklahoma state line; east to the junction of Interstate 40 and U.S. Highway 67; north and east on U.S. Highway 67 to the Arkansas-Missouri state line; west along the Arkansas-Missouri state line to the Arkansas-Oklahoma state line; and south along the Arkansas-Oklahoma state line to the junction of Interstate 40.

Zone 2 – Start at the junction of Interstate 40 and the Arkansas-Oklahoma state line; east on Interstate 40 to Interstate 430; south on Interstate 430 to Interstate 30; south and west on Interstate 30 to Arkansas Highway 51; south on Arkansas Highway 51 to Arkansas Highway 26; west on Arkansas Highway 26 to U.S. Highway 278 at Center Point; west on U.S. Highway 278 to U.S. Highway 70 at Dierks; west on U.S. Highway 70 to the Arkansas-Oklahoma state line; and north along the Arkansas-Oklahoma state line to Interstate 40.

Zone 3 – Start at the junction of Interstate 30 and Arkansas Highway 51; south on Arkansas Highway 51 to Arkansas Highway 26; west on Arkansas Highway 26 to U.S. Highway 278 at Center Point; west on U.S. Highway 278 to U.S. Highway 70 at Dierks; west on U.S. Highway 70 to the Arkansas-Oklahoma state line; south along the Arkansas-Oklahoma state line to the Red River; east along the Red River to U.S. Highway 71; south on U.S. Highway 71 to Interstate 30; and north and east on Interstate 30 to Arkansas Highway 8 near Arkadelphia.

Zone 4 – Start at Interstate 30 and the Arkansas-Texas state line at Texarkana; north and east on Interstate 30 to U.S. Highway 65; south on U.S. HIghway 65 to Lake Village; east on U.S. Highway 82 to the Mississippi River; south along the Mississippi River to the Arkansas-Louisiana state line; west along the Arkansas-Louisiana state line to the Arkansas-Texas state line; and north to Interstate 30.

Zone 5 – Start at the junction of U.S. Highway 165 and the Arkansas River (at Pendleton Bridge); north on U.S. 165 to Arkansas 130 at DeWitt; north on Arkansas Highway130 to Arkansas Highway 33; north on Arkansas Highway 33 to U.S. Highway 79; north and east on U.S. Highway 79 to U.S. Highway 49; south and east on U.S. Highway 49 to the Mississippi River Levee; south on the Mississippi River Levee to the confluence of the Mississippi and Arkansas rivers; north and west along the Arkansas River to the junction of the Arkansas River and U.S. Highway 165 (at Pendleton Bridge).

Zone 5A – Start at the junction of U.S. Highway 165 and the Arkansas River (at Pendleton Bridge); south on U.S. Highway 165 to the junction with U.S. Highway 65; south on U.S. Highway 65 to the junction with U.S. Highway 82; east on U.S. Highway 82 to the Mississippi River; north on the Mississippi River to the confluence of the Mississippi and the Arkansas rivers; north and west along the Arkansas River to the junction of the Arkansas River and U.S. Highway 165 (at Pendleton Bridge).

Zone 6 – Start at Interstate 40 at the Arkansas-Tennessee state line; west on Interstate 40 to the junction of interstate 440; south on Interstate 440 to U.S. Highway 65; south on U.S. Highway 65 to the junction of U.S. Highway 165; north on U.S. Highway 165 to Arkansas Highway130 at DeWitt; north on Arkansas Highway 130 to Arkansas Highway33; north on Arkansas Highway 33 to U.S. Highway 79; north and east on U.S. Highway 79 to U.S. Highway 49; south and east on U.S. Highway 49 to the Mississippi River; and up the Mississippi River to Interstate 40.

Zone 7 – Start at Interstate 40 and the Arkansas-Tennessee state line; go west on Interstate 40 to U.S. 67; north and east on U.S. 67 to the Arkansas-Missouri state line; follow the Arkansas-Missouri state line around the Missouri Bootheel to the Mississippi River; and down the Mississippi River to Interstate 40.