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Optimizing Traffic Signals to Reduce Intersection Wait Times

By Texas A&M Today

January 22, 2021

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Researchers at Texas A&M University and the U.K.'s University of Edinburgh have developed a system that uses machine learning to optimize the timing of traffic signals to reduce wait times at intersections.

Their approach can successfully train a deep neural network in real time and transfer what it has learned from real-world observations to a different control function that can be understood and regulated by traffic engineers.

The researchers used a simulation of a real intersection and found that optimizing their interpretable controller reduced vehicle delays by as much as 19.4% compared to commonly deployed signal controllers, which are the "brains" of an intersection.

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