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Cichlidae posted:
I was just reading about Chicago's Circle Interchange, which is also a stack, but is also apparently the country's third-worst traffic bottleneck. So if a stack is already the highest capacity interchange, what do you do if it's still not enough? Spread everything out more?
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Jul 28, 2009 22:18
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Vanomaly posted:Awesome thread! I just saw an interesting variation on these near Chicago. Rather than show your speed, it was a regular speed limit sign with an LED/strobe light border that would start flashing at you if you were going well over the limit. I think this is a better idea.
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Jul 29, 2009 20:33
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Cichlidae posted:This was very interesting. I've seen two kinds of timings used in intersections like this. Usually, intersections like this will cycle 1-5, 2-6, 3-7, 4-8, skipping the arrows if there are sensors and nobody is turning left. However, occasionally, I'll come across one that cycles through each direction clockwise, 1-6, 4-7, 2-5, 3-8. It typically takes a lot longer to move through that cycle. What sort of conditions or factors go into deciding which of those cycles to use?
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Jul 30, 2009 05:47
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Cichlidae posted:Triple digit US routes, like 202, are bypasses or spurs of their respective two-digit routes. I've also read that for the triple-digits, if the first number is even, it will connect back up with the original route (bypass), and odd first digits are spurs. I'm not sure if this is always the case, but it is for every road I can think of around here. And the even/odd numbering can be very confusing in places like Chicago, where the major East-West expressways 90 and 94 both run North-South. I still don't understand whey they don't label them N/S on the signs around here (or both E/W and N/S).
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Jul 31, 2009 22:11
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