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Originally Posted by Steely Dan
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Another Chicago control sign oddity is the I-290 W split off of l-90/94 at the circle junction in downtown where the control signs literally say "west suburbs".
How's that for a control city?
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Interesting, but it somehow makes sense to me (even though I don't know which suburbs they're referring to), because here in SoCal, on the 91 Freeway east of Orange County, the control city going west is "Beach Cities." I know which beach cities they're referring to, but I would imagine someone not from the area wouldn't know. But then as you get into Orange County, the control city becomes "Los Angeles," and then when you get to the 5 it becomes "Artesia," and then as you enter LA County it becomes "THRU TRAFFIC," and then into Long Beach it becomes "
![](https://upload.wikimedia.org/wikipedia/commons/thumb/2/21/California_91.svg/24px-California_91.svg.png)
WEST."
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Originally Posted by PHX31
This interstate control city discussion is interesting and could be a good topic on it's own. There doesn't seem to be any actual federal standard, just guidance, and states seem to pick and choose differently, even within states and cities themselves.
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Funny, because on my recent road trip through Arizona, in Phoenix, for the 10 going west, the control city is "Los Angeles." However, in Los Angeles, the control city going east from LA is "San Bernardino," and then if I remember correctly, the next control city is "Redlands/Palm Springs," and then from there it's "Indio and Other Desert Cities" (hehe), and then going east from Indio, you see "Blythe/Phoenix."