Road condition detection system based on vehicle GPS data
A GPS data, road condition detection technology, applied in the direction of road vehicle traffic control system, traffic flow detection, traffic control system, etc., can solve the problems of high installation cost, many coverage blind spots, and many faults of the detector, and achieve reliable and stable data. Transmission, efficient and stable algorithm, high calculation accuracy
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[0058] The road condition detection method based on vehicle GPS data of the present invention makes full use of big data thinking, utilizes GPS data of floating vehicles driving in the urban road network, and uses efficient map matching algorithms to match vehicles to the road they are driving in real time.
[0059] The map matching algorithm mainly uses the GPS coordinates of the vehicle and the road segment coordinates to match, and calculates the matching degree between the two with the weight of distance and direction. When a vehicle leaves a road segment, the time stamp marked by the floating car data can be used to calculate the travel distance and travel time of the vehicle on the previous road segment, and further calculate the average travel speed of the vehicle on the road segment.
[0060] The timer counts all floating vehicles driving on the road network at intervals of 5 minutes, calculates the average speed of all vehicles passing the road section in the time interval,...
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