摘要
采用改进的加权概率元胞自动机模型对主道是双车道的入口匝道系统进行模拟分析,并考虑了匝道上车辆的从众效应。模拟研究了从众效应对入匝道系统交通流特性的影响,并把此种情况下的系统相图与不考虑从众效应时的系统相图和以前的研究成果进行比较分析。研究了当主道和匝道都达到饱和时,主道上游、匝道及主道下游的通行能力与从众概率的变化关系。模拟结果表明,从众效应能在一定程度上减弱主道对匝道的瓶颈效应,提高匝道的通行能力。
The traffic system with two-lane main road and one-lane on-ramp was simulated and analyzed by using the modified weighted probabilistic cellular automaton model.The conformity effect of the vehicles on the ramp was considered.The phase diagrams with and without the conformity effect were analyzed and compared to study the influence of conformity effect on traffic flow characteristics.The variations of the capacity at upstream the on-ramp,the on-ramp and downstream the on-ramp with respect to the conformity probability were analyzed,when main road and on-ramp both are saturated.The results indicate that conformity effect can weaken the bottlenecks effect caused by the main road on the on-ramp to some extent and increase capacity of on-ramp.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2009年第S2期52-57,共6页
Journal of Jilin University:Engineering and Technology Edition
基金
"973"国家重点基础研究发展规划项目(2006CB705500)
国家自然科学基金重点项目(70631001)
国家自然科学基金项目(70501004)
教育部新世纪优秀人才支持计划项目(NCET-07-0057)
关键词
交通运输工程
入口匝道系统
元胞自动机
从众效应
engineering of communication and transportation
on-ramp system
cellular automaton
conformity effect
