Macro modeling and analysis of traffic flow with road width  

作　　者：唐铁桥 李传耀 黄海军 尚华艳 

机构地区：[1]School of Transportation Science and Engineering,Beijing University of Aeronautics and Astronautics [2]School of Economics and Management,Beijing University of Aeronautics and Astronautics [3]Information College,Capital University of Economics and Business

出　　处：《Journal of Central South University》2011年第5期1757-1764,共8页中南大学学报（英文版）

基　　金：Project(NCET-08-0038) supported by the Program for New Century Excellent Talents in Chinese University;Projects(70701002,70971007 and 70521001) supported by the National Natural Science Foundation of China;Project(2006CB705503) supported by the National Basic Research Program of China

摘　　要：The macro modeling and the solution of traffic flow with road width were investigated.Firstly,a new macro model with the consideration of road width was proposed.Secondly,the effects of road width on uniform flow and small perturbation were studied.The analytical and numerical results show that widening (shrinking) road can enhance (reduce) the equilibrium speed and flow,and the increments (decrements) will increase with the absolute value of road width gradient.In addition,the numerical results illustrate that the new model can describe the effects of road width on the evolutions of uniform flow and small perturbation.The macro modeling and the solution of traffic flow with road width were investigated. Firstly, a new macro model with the consideration of road width was proposed. Secondly, the effects of road width on uniform flow and small perturbation were studied. The analytical and numerical results show that widening （shrinking） road can enhance （reduce） the equilibrium speed and flow, and the increments （decrements） will increase with the absolute value of road width gradient. In addition, the numerical results illustrate that the new model can describe the effects of road width on the evolutions of uniform flow and small perturbation.

关 键 词：traffic flow road width macro modeling PERTURBATION 

分 类 号：U491[交通运输工程—交通运输规划与管理]