Properties of Phase Transition of Traffic Flow on Urban Expressway Systems with Ramps and Accessory Roads  

作　　者：梅超群 刘业进 

机构地区：[1]School of Statistics,Capital University of Economics and Business [2]School of Urban Economics and Public Affair,Capital University of Economics and Business

出　　处：《Communications in Theoretical Physics》2011年第11期945-951,共7页理论物理通讯（英文版）

基　　金：Supported by grants from the Humanities and Social Sciences Foundation of Ministry of Education of China under Grant No. 09YJC790193;Funding Project for Academic Human Resources Development in Institutions of Higher Learning Under the Jurisdiction of Beijing Municipality the Research Funds of Capital University of Economics and Business under Grant No. 00591056721621;the National Natural Science Foundation of China under Grant No. 70971007

摘　　要：In this paper, we develop a cellular automaton model to describe the phase transition of traffic flow on urban expressway systems with on-off-ramps and accessory roads. The lane changing rules are given in detailed, the numerical results show that the main road and the accessory road both produce phase transitions. These phase transitions will omen be influenced by the number of lanes, lane changing, the ramp flow, the input flow rate, and the geometry structure.

关 键 词：traffic flow RAMP phase transition 

分 类 号：U491[交通运输工程—交通运输规划与管理]