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Traffic jam recreated

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Date: Mar 04, 2008 - 09:37 AM
Japanese researchers have recreated the "shockwave" traffic jam pattern in a controlled experiment:

That cluster spread backwards through the traffic like a shockwave. Every time a vehicle at the front of the cluster was able to escape at up to 40 km/h, another vehicle joined the back of the jam.
The shockwave jam travelled backwards through the ring of vehicles at roughly 20 km/h, which is the same as the speed of the shockwave jams observed on roads in real life, says lead researcher Yuki Sugiyama, a physicist in the department of complex systems at Nagoya University.




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