The invention provides a method for urban road link travel time detection based on a video detector. Existing methods are mainly based on floating vehicle data, but differences of passenger load factors and vehicle utilization rates of floating vehicles in different time periods are great, resulting in insufficient data sample size and nonuniform distribution. The method comprises: through matching license plate numbers of vehicles on upstream and downstream of a road section, obtaining travel time of each vehicle, so as to obtain link travel time; according to drive-in and run-away directions and lane information provided by the data, respectively calculating link travel time of traffic flows in different directions; and through analyzing correlation and significance of roads, weather, and traffic conditions, obtaining a prediction algorithm of the travel time, so as to predict the link travel time of different road sections or in different time. The method makes full use of existing video resources to obtain sufficient data support, defects that a conventional detection method is low in sample size and nonuniform in distribution are solved. The data matching method and the travel time calculation method are simple and fast, and are easy to realize in engineering.
Method for urban road link travel time detection based on video detector
2015-08-19
Patent
Electronic Resource
English
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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