The invention discloses a traffic road condition estimation dynamic iteration method. According to the method, existing charging record data is utilized, the operation state of a road is reproduced through the dynamic iteration method including the step of calculating a shortest path of a vehicle driving in a road net aiming at each OD record; the driving state of the vehicle on each path section of the shortest path is inverted, and the flow and speed of each road section at each moment based on a uniform speed hypothesis are obtained; dynamic iteration inversion is carried out on all vehicle records; when a calculated variance f(x) is larger than or equal to a set variance threshold, the variance is adjusted by means of variance balancing, and dynamic iteration is carried out; and finally an inversion result is obtained. According to the invention, time is continuous, and by means of dynamic iteration, each tracing point in each time of iteration is adjusted in time and space, so that the rationality and the accuracy of the result of road operation state reproduction are ensured, and the road operation condition is monitored in real time.
Traffic road condition estimation dynamic iteration method
2015-10-28
Patent
Electronic Resource
English
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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