Traffic lights that act locally can improve traffic globally, new research suggests. By minimizing congestion, the approach could save money, reduce emissions and perhaps even quash the road rage of frustrated drivers.From ScienceNews "To tame traffic, go with the flow: Lights should respond to cars, a study concludes, not the other way around" by Rachel Ehrenberg, Web edition, Friday, September 17th, 2010.
The new approach makes traffic lights go with the flow, rather than enslaving drivers to the tyranny of timed signals. By measuring vehicle inflow and outflow through each intersection as it occurs and coordinating lights with only their nearest neighbors, a systemwide smoothness emerges, scientists report in a September Santa Fe Institute working paper.
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Saturday, September 18, 2010
Traffic Lights That Act Locally Improve Traffic Globally
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