Effects of the number of on-ramps on the ring traffic flow  

作　　者：唐铁桥 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]Institute of Transportation Engineering,Tsinghua University

出　　处：《Chinese Physics B》2010年第5期181-186,共6页中国物理B（英文版）

基　　金：Project supported by the Program for New Century Excellent Talents in University,China (Grant No. NCET-08-0038);the National Natural Science Foundation of China (Grant Nos. 70701002,70971007 and 70521001);the National Basic Research Program of China (Grant No. 2006CB705503)

摘　　要：Since ramps are an important composition of traffic systems and there often exist multi ramps in a tragic system, the number of ramps can have great effects on main road traffic and produce some complex phenomena. In this paper, we employ the model presented by Tang et al. [2009 Communications in Theoretical Physics 51（1） 71] to further study the effects of the number of on-ramps on the stability of traffic flow on a ring road. The numerical results show that this model can reproduce some complex tragic phenomena resulting from multi on-ramps on the ring road and the effects of the number of on-ramps on traffic flow, but the phenomena and the effects are both related to the initial density of the main road.Since ramps are an important composition of traffic systems and there often exist multi ramps in a tragic system, the number of ramps can have great effects on main road traffic and produce some complex phenomena. In this paper, we employ the model presented by Tang et al. [2009 Communications in Theoretical Physics 51（1） 71] to further study the effects of the number of on-ramps on the stability of traffic flow on a ring road. The numerical results show that this model can reproduce some complex tragic phenomena resulting from multi on-ramps on the ring road and the effects of the number of on-ramps on traffic flow, but the phenomena and the effects are both related to the initial density of the main road.

关 键 词：traffic flow ON-RAMP STABILITY 

分 类 号：U491.112[交通运输工程—交通运输规划与管理]