Brian Hayes wrote a nice article about this a few months ago in American Scientist [1] and also wrote a little JS demo to tinker with linked from here [2]. 1.

Brian Hayes wrote a nice article about this a few months ago in American Scientist [1] and also wrote a little JS demo to tinker with linked from here [2]. 1. http://www.americanscientist.org/libraries/documents/201561716294611219-2015-07CompSciHayesRev.pdf http://www.americanscientist.org/libraries/documents/2015617... 2. http://bit-player.org/2015/traffic-jams-in-javascript http://bit-player.org/2015/traffic-jams-in-javascript