Traffic control and monitoring are two different things. They probably have sensors tracking movements, but use state of the art 80s relay cards to control the

Traffic control and monitoring are two different things. They probably have sensors tracking movements, but use state of the art 80s relay cards to control the system. "Smart cameras" in this case would be devices with edge NN classification built in. But there's always products like briefcam / good vision if they only have the regular camera feeds.