The invention discloses a method for obtaining the congestion index of a motorway, and the method comprises the steps: calculating a traffic condition parameter through definition, wherein the traffic condition parameter serves as a congestion index of the condition of atom road segments; calculating and obtaining the congestion index of a road through the calculation of the dynamic road section importance of all atom road segments; and obtaining the congestion index of the whole road network through calculating the dynamic road segment importance of all roads in a road network. The road condition parameter is approximately equal to the traffic flow density. The traffic flow density is obtained through the ratio of a road segment inventory to the product of a road segment length and a lane number. The inventory is obtained through the back calculation of the average speed of the traffic flow. The method is direct and simple in calculation, can quantify the road condition and depict the congestion in a systematic and layered manner, reflects the operation condition of a motorway network, can provide decision-making support for a traffic manager, provides reference for the travel of persons, alleviates or reduces the congestion of the motorway, and saves the social cost.
Method for obtaining congestion index of motorway
2015-11-04
Patent
Electronic Resource
English
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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