On backs of buses, LED screens display traffic light info

Stuck behind a bus and wondering when the light will turn green? In southwest China's Chongqing, that guesswork is gone. Some 110 buses are now equipped with LED screens displaying real-time traffic light countdowns, making every stop a little smarter. #Chongqing #SmartTransport #TrafficTech #LEDDisplay #PublicTransport #ChinaInnovation