Traffic congestion and the resulting delays costs major U.S. cities $121 billion in fuel costs and productivity loss annually, the equivalent of about $800 per commuter. Now, computer scientists in Pennsylvania have a new smart traffic signal system that could help reduce traffic congestion, curb pollution and cut commuter time.
“Individual lights are part of a larger network, so that traffic moves as efficiently as possible through the network,” said Stephen Smith, a computer scientist at Carnegie Mellon University in Pittsburgh.
The system – called  Smart Urban Traffic Control, or SURTRAC – gives lights at intersections the ability to adjust to changing traffic conditions in real time.
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