Effect of road structure on the capacity of a signalized road intersection  

作　　者：盘佳秀 薛郁 梁玉娟 唐铁桥 

机构地区：[1]Institute of Physics Science and Engineering, Guangxi University [2]Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University [3]School of Automobile Engineering, Beijing University of Astronautics and Aeronautics

出　　处：《Chinese Physics B》2009年第10期4169-4176,共8页中国物理B（英文版）

基　　金：Project supported by the National Basic Research Program of China (Grant No 2006CB705500);the National Natural Science Foundation of China (Grant Nos 10662002, 10865001 and 10532060);the Special Foundation for the New Century Talents Program of Guangxi Zhuang Autonomous Region, China (Grant No 2005205);the Graduate Student Innovation Program of Guangxi Zhuang Autonomous Region, China (Grant No T32070)

摘　　要：In this paper, we use the stochastic Nagel-Schreckenberg （NaSch） model to investigate the influence of a special right-turning lane connecting two main roads on the capacity of a signalized road intersection. It is found that the magnitude of right-turning traffic flow and the linking position of the special right-turning lane can greatly influence the capacity of the signalized road intersection. The relation between traffic flow and entering probability for different distances between the entrance （exit） of the special right-turning lane and the road intersection is simulated and analysed. The corresponding spatiotemporal pattern and phase diagram on different sections of the main road are given under the condition of close proximity to the signalized road intersection, stop-and-go traffic occur and obstruct the intersection. On the contrary, unchanged flux is maintained as the distance exceeds a critical values. All the studies indicate that setting a special right-turning lane by choosing a suitable location near a signalized road intersection can relieve the load of current traffic on the main road and maintain traffic flow.In this paper, we use the stochastic Nagel-Schreckenberg （NaSch） model to investigate the influence of a special right-turning lane connecting two main roads on the capacity of a signalized road intersection. It is found that the magnitude of right-turning traffic flow and the linking position of the special right-turning lane can greatly influence the capacity of the signalized road intersection. The relation between traffic flow and entering probability for different distances between the entrance （exit） of the special right-turning lane and the road intersection is simulated and analysed. The corresponding spatiotemporal pattern and phase diagram on different sections of the main road are given under the condition of close proximity to the signalized road intersection, stop-and-go traffic occur and obstruct the intersection. On the contrary, unchanged flux is maintained as the distance exceeds a critical values. All the studies indicate that setting a special right-turning lane by choosing a suitable location near a signalized road intersection can relieve the load of current traffic on the main road and maintain traffic flow.

关 键 词：traffic flow cellular automaton phase diagram road intersection 

分 类 号：O414.2[理学—理论物理]