Through intelligent sensors, video surveillance, meteorological monitoring stations and other devices to complete the collection of road network, people, vehicles, roads, environment, facilities of all elements of information, the formation of a complete data perception control iot network, real-time detection of bad weather events, timely release of road control plans. Minimize the impact of bad weather on road traffic, prevent the occurrence of traffic accidents, and create a good road traffic environment for people to travel safely and smoothly.