Video: Flying Traffic Signals in China

China has demonstrated a new test of traffic signals that are launched in the form of drones, which fly over busy intersections. The aim of this technology is to temporarily manage traffic flow and issue audio instructions and warnings when congestion levels rise. This system was trialed in Jinhua city, Zhejiang province, during the National Day holiday, and is expected to help improve traffic regulation and reduce congestion in densely populated urban areas.

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