基于廣義徑向基神經(jīng)網(wǎng)絡(luò)的城市道路運行狀況評價研究
[Abstract]:With the development of society, people's living standard is improving, the proportion of private cars in travel tools is increasing, and the urban road infrastructure is not perfect, and the traffic planning is not reasonable. As a result, traffic jams and accidents often occur in urban roads. In order to improve the operation of urban road traffic, it is necessary to evaluate it first so as to obtain reasonable and effective traffic control measures. Therefore, the evaluation of urban road traffic operation is very necessary and significant. In this paper, traffic congestion analysis is used to measure and characterize the operation of urban roads. If the traffic congestion is serious, the road running condition is considered to be poor, and if there is no congestion, the road operation condition is considered to be good. First of all, through the analysis of the causes, influencing factors and traffic flow characteristics of urban road traffic congestion, the evaluation index system of road congestion degree is established, and then, through comparative analysis, The optimization algorithm of the generalized radial basis function neural network is selected to establish the calculation model of the traffic congestion degree of the urban road. Further, taking the typical local road network in Xi'an as the research object, the field investigation of the late rush hour for two weeks is carried out. Taking MATLAB2010 as the operating platform, this paper comprehensively evaluates the traffic congestion degree of each sample section and typical section of the road network, and then finds out the location, cause of formation and time point of the congestion. Finally, the weighted average method is used to evaluate the traffic condition of the whole road network at the late rush hour. In the evaluation result, the path with the lowest index value of traffic running condition is the optimal travel path. The evaluation of the optimal travel path is helpful to avoid the traffic congestion and improve the travel efficiency.
【學(xué)位授予單位】:長安大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:U491
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