Accident influence range analysis method based on dynamic traffic information

Abstract

The invention provides an accident influence range analysis method and system based on dynamic traffic information. The method comprises the following steps: (101) whether a road segment is jammed is judged, the road segment is jammed if the current traffic capacity of the road segment is smaller than real-time traffic flow of the road segment, and a step (102) is executed; (102) a jam starting wave transmission speed is calculated, the transmission time of a jam wave in any road segment I is calculated, and an accident influence range, accident influence duration and a jam transmission path are estimated on the basis of the obtained jam starting wave transmission speed and the obtained transmission time of the jam wave in any road segment. According to the accident influence range analysis method and system based on the dynamic traffic information, dynamic traffic data are combined with road network data to realize urban road traffic accident influence range prediction, and therefore targeted prediction can be conducted on a specific accident. A coil, floating car and other data serve as predicted data and are input, the data are high in accuracy, and therefore the accuracy of a prediction result is guaranteed in terms of predicted data bases.

Description

technical field [0001] The invention relates to an analysis method for an accident impact range, in particular to an accident impact range analysis system based on dynamic traffic information. Background technique [0002] With the rapid increase of the number of motor vehicles in my country and the saturation of infrastructure construction, the pressure on urban traffic is increasing, and the stability of traffic flow operation is also decreasing. Normal operation is even more important. [0003] At present, the traditional methods of dealing with urban road traffic accidents are mainly to simply discover and deal with accidents, and it is difficult to make accurate judgments and early warnings on the scope of influence of accidents. How to quickly and accurately predict the impact range of the accident site and surrounding road sections, and formulate the accident handling plan on this basis, plays an important role in improving the efficiency of urban road traffic acciden...

AI Technical Summary

Problems solved by technology

[0006] (1) There are few methods for predicting the impact range of urban road traffic accidents, some of which are only real-time monitoring or simple prediction of the impact range of urban road traffic accidents, but do not target specific road sections and impacts of urban road traffic accidents at a specific time sex prediction

[0007] (2) Some methods for predicting the impact range of road traffic accidents in some cities require the installation of a large number of fixed monitors, and the construction cost is relatively high

[0008] (3) There are currently some methods for predicting the impact of expressway traffic accidents, but due to the large differences between expressway and urban traffic, they cannot be directly applied to the prediction of urban road traffic accident impacts

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