Research On Intersection Delay Model For Traffic Network Assignment

Along with the acceleration of urbanization,traffic congestion has become one of the bottlenecks which restricts urban development.In the development and planning of modern cities,traffic planning and traffic management and control have been paid more and more attention,and the result prediction and demonstration of the measures are becoming more and more important.The application of macro traffic distribution method and the simulation software in the engineering are increasing.In the traffic distribution,the most important thing is the calculation of the road right.In the urban road traffic network,the intersection is the basic node,and the calculation of the delay and delay of the intersection is also the key point.In the current research,the research objects are usually limited to one or one intersection and lack the overall research on the macro traffic network intersection.Therefore,a complete set of comparability of the intersection delay calculation model is needed to adapt to the macro traffic network allocation.In order to solve the above problems,this paper combines the current traffic operation characteristics of our country to explore the model of delay calculation of different types of intersection to serve the traffic planning software "TranStar" traffic assignment module.The research contents of this thesis include the following sections.The first is the analysis of the existing intersection delay model,the characteristics of the more mature models are analyzed,and the applicable conditions and scope of application of each model are summarized in order to carry out the follow-up study.Secondly,the data of the typical intersections of Nanjing are collected by video shooting,and the parameters of the selected combination model are calibrated,and a delay calculation model is set up in accordance with the national conditions of our country.The traffic assignment requirement is comparable to the result of the delay calculation at the intersection.In this paper,the design values are delayed by the established intersection delay calculation model and the calibrated simulation environment.The evaluation results are evaluated from two aspects: absolute value and relative value,and the comparability of the model is demonstrated based on the evaluation of the results.Finally,this paper applies the hybrid programming of Visual C++ and Qt to Professor Wang Wei’s "TranStar" software platform to promote the engineering application of traffic planning theory.