Reliability evaluation method of urban road network based on data of floating vehicles

Abstract

The invention discloses a reliability evaluation method of an urban road network based on data of floating vehicles. The method comprises the following steps of applying the data of the floating vehicles, and combining with a geological information system technique to obtain traffic flow data of the road network; using the traffic flow data as road section weights, and combining with an adjacent matrix of the road network to generate a directed weighting complicated road network file; applying complicated network simulation software to output complicated network feature parameters corresponding to different moments of the road network, and finally building a reliability evaluation model of the directed weighting road network; substituting the outputted complicated network feature parameters to calculate, so as to obtain a final reliability evaluation value. The method has the advantages that the data of the floating vehicles and a complex network theory are combined to evaluate the reliability of the urban road network from a macro perspective, the traffic flow features of dots, lines and planes of the road network are integrally researched, the defect of the reliability evaluation of the road network from a micro dynamics perspective is effectively overcome, and the reliability evaluation of the urban road network is more perfect.

Description

Technical field: [0001] The invention relates to the field of reliability evaluation of urban road networks, in particular to a method for evaluating the reliability of urban road networks from a macro perspective by combining floating car data and complex network theory. Background technique: [0002] With the increasing level of urbanization, people's travel needs are increasing rapidly, resulting in the shortage of existing urban road systems, daily and occasional traffic problems are becoming more and more serious, greatly reducing the reliability of the transportation system, and affecting urban functions. Normal performance and urban development have adverse effects. Therefore, it is of great significance to study the reliability evaluation method of urban road network for traffic managers to manage and control the road network. [0003] The reliability evaluation of urban road network mainly includes the evaluation index and the evaluation method used to calculate th...

AI Technical Summary

Problems solved by technology

The evaluation methods of connectivity reliability mainly include the binary method, which only considers the two extreme operating states of connection or interruption of road sections, and the subsequent "reliability evaluation method of road network connectivity based on alternative paths" proposed by Guo Jifu; for the reliability of travel time The representative evaluation method is a game theory method based on the traveler’s route selection, but this method requires a large amount of data, and the travel time threshold cannot be calculated when the amount of data is insufficient; the road network capacity reliability evaluation method mainly includes the Monte Carlo method. , this method obtains the capacity value of each road section through statistics, and then calculates the maximum traffic capacity of the road network to obtain the capacity reliability of the road network, but this method also requires a large amount of data, otherwise the capacity threshold cannot be calculated

The above evaluation methods all require a large amount of data support, and many methods involve obtaining OD pair data, which is difficult to apply in practice

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