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by repsilat 5316 days ago
Automatic, cooperative routing also has great benefits over greedy time-minimising routing. In addition to the micro-level benefits (no stopping at traffic lights, fewer traffic waves) there are network-level benefits because the Nash equilibrium of user-optimal routing can be really crappy.

I highly recommend reading about Braess' Network Paradox for a great illustration of this.

http://en.wikipedia.org/wiki/Braess%27s_paradox