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Optimizing Traffic Signals to Reduce Intersection Wait Times

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An active intersection.

A team of researchers has developed a self-learning system that uses machine learning to improve the coordination of vehicles passing through intersections.

Credit: Getty Images

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.

From Texas A&M Today
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Abstracts Copyright © 2021 SmithBucklin, Washington, DC, USA


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