China smart traffic 2025: RMB 1.2T intelligent transportation market, Huawei Smart City ITS with 5G+AI traffic management 200+ cities, Alibaba Cloud City Brain Hangzhou congestion reduced 15%, Baidu Apollo autonomous driving 30M km L4 robotaxi Beijing/Shanghai/Shenzhen/Wuhan, DJI Skydio drone traffic patrol 500+ intersections, Dahua Hikvision AI camera enforcement 200M+ units nationwide, Didi autonomous fleet 100K+ ride-hailing EV
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