Study On The Service Level Evaluation Of Road Network

In a variety of urban morphology, multicenter, layout depended urban has obvious advantages,which is considered to be the most mainstream form of development of today. Groups in the city, most of the activities about transportation can be completed within the group, the traffic flow in the city is dispersed into groups at all levels, which reduces the areas of the city road traffic pressure, to ensure the efficient operation of the urban road traffic. Along with the rapid development of urban motorization, however, the increasing car ownership and road traffic volume makes group road network traffic congestion problem more and more prominent, pattern depended traffic advantage is no longer apparent. If we can accurately measure the organizer road network service level and grasp the group the running status of road network traffic, it will be good for traffic management personnel to make reasonable traffic management measures, so as to achieve the purpose of ease group network congestion.The establishment of the selection of evaluation index, evaluation model and the determination of classification standard is the three basic elements of service level evaluation. In this paper, the city group network features and service level evaluation of the three basic elements, the combination of launched to urban group road network service level evaluation study of the problem. The full text research work mainly embodied in the following aspects:â‘ Analyzed the network characteristics of the city group from different angles. In this paper, urban group network was analyzed from the angle of road composition and function of road network, road characteristics. It points out that the two group of city road network, the establishment of the group for the city road network service level evaluation model laid the foundation. Then from the Angle of macroscopic and microscopic two different group of city road network traffic flow characteristics are analyzed, and the group for the city road network service level evaluation index selection made.â‘¡Selected the more accurately measure the organizer road network service level evaluation index. Previous sections for service level evaluation research were mostly about the micro(or intersection), which is not applicable to the service level of road network evaluation. This paper is closely related with the running status of group network of roads at all levels of the group selection of road network service level evaluation index, and starting from the group network structure characteristics, set up covering the micro, medium and macro levels of three different groups road network service level evaluation index system.â‘¢Set up the classification standard of the urban group network service level. This article researched from the perspective of service level evaluation of fuzziness, the fuzzy clustering theory, through the study of the clustering analysis of large amounts of data for the determination of the service level classification standard group network.â‘£Established the hierarchical structure of group road network service level evaluation model. In this paper, the fuzzy comprehensive evaluation method combined with clustering analysis and analytic hierarchy process based on the group evaluation index system of road network service level, road sections according to the micro, medium and macro the order of the network group of city road network service level evaluation step by step.