to its western terminus at Interstate 10 uses El Paso as a control city, as does I-10 west from San Antonio. I-20 doesn't travel all the way to El Paso but merges into I-10. Interstate 8 in Arizona uses Tucson as a control city eastbound from Yuma to Casa Grande, where it defaults onto Interstate 10. Phoenix is also used but between Yuma and Gila Bend; this is because travelers headed to Phoenix take AZ 85 from Gila Bend to I-10. Interstate 84 east from Hartford to its terminus at Interstate 90 near Sturbridge, Massachusetts uses Boston. Interstate 90 in Washington does not use Ellensburg, Washington as a control city between Spokane and Seattle. Interstate 5 in Washington uses Portland, Oregon as the southbound control city from Seattle to the Oregon state line (skipping over Tacoma and Olympia). Interstate 80 in Ohio heading eastbound from Cleveland uses New York City as a control city instead of the 10 listed municipalities in Pennsylvania and the Delaware Water Gap. Some beltways or spurs which run through multiple states have different rules on control cities in each state. One instance is Interstate 435, the beltway in the Kansas City Metropolitan Area. Signs for I-435 in Kansas do not have control cities listed, while in Missouri, one of five control cities is listed, depending upon direction and location: Des Moines, St. Joseph, St. Louis, Topeka and Wichita. According to Section 2E.13 of the Manual on Uniform Traffic Control Devices, control cities must appear on guide signs: At interchanges between freeways (example US-1 in gallery) At separation points of overlapping freeway routes (example US-2 in gallery) On directional signs on intersecting routes, to guide traffic entering the freeway (example US-3 in gallery) On pull-through signs (example US-4 in gallery) On the bottom line of post-interchange distance signs (example US-5 in gallery) Since the cities on post-interchange distance signs are listed in ascending order of distance, the control city of routes in the United States is typically the most distant locality on the signs of a particular road. Oceania Australia Freeways in Australia, while not using the term 'Control City', operate on much the same system as in the United States and Europe. Directional markers are not used, instead the next large towns or cities which are likely to be the destination, or known waypoints for motorists, are used. Within cities major suburbs will usually be