Mailbag: The Crosstown in color and ghost jams

Posted on March 12th, 2008 – 6:54 PM
By Roadguy

Alert reader Joel had a bit of spare time on his hands recently, so he pasted together some diagrams of the I-35W/Crosstown project and added a little color to help clarify where and what all the new roadways will be. The helpful result can be viewed here. Joel writes:

It’s a 1MB+ file, so it’ll take a while to download. It’s also a PNG, which older versions of IE might have trouble with. 35W is red, 62 is blue, and streets with access to the highways are green. It’s pretty self-explanatory after that.

(When I first pasted in Joel’s quote, I somehow deleted an “s,” which made things “elf-explanatory,” which is something entirely different.)

As we know, even newly designed roads can’t stop all jams, and alert reader Rico Suave points us to this study out of Japan, complete with video. It looks at the “shockwave effect,” which is when a slowdown of no apparent cause moves through freeway traffic — according to the article, it turns out they’re “typically triggered by a single driver slowing down” and “human error.” Roadguy has always wondered about “ghost jams,” and now he knows: It’s the power of the individual to affect society. Lucky us.

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