Control cities are key cities located on a freeway route that are used for destinations in freeway interchange signing and in distance signing.

The following table lists the control cities for interstate highways located within Texas. The control cities are identified in Part III — “List of Control Cities for Use in Guide Signs on Interstate Highways,” GSGLC-4 (American Association of State Highway and Transportation Officals, Washington, D.C., 20001). Control cities should be used for all interstate highways. Non-interstate freeways should use the interstate control cities where possible and should use cities of similar population or significance where it is not possible to use the interstate control cities. Any given route should have the same control cities in both directions of travel and the control cities must lie on the intersected route. Additional guidelines for destination names are included in Part 2E of the Texas MUTCD.