75 miles per hour on any portion of the state highway system.

80 miles per hour on parts of Interstate Highway 10 and Interstate Highway 20 in Crockett, Culberson, Hudspeth, Jeff Davis, Kerr, Kimble, Pecos, Reeves, Sutton, and Ward counties, or

Up to 85 miles per hour on a highway designed to accommodate travel at the speed being established.