摘要
为了了解两车道交通流的内在规律,更加真实的描述两车道交通流的换道情形,分析了现有交通流格子模型中存在的问题,通过引进换道系数和换道阈值,改进流量转移率模型获得了新的两车道交通流格子模型,克服了现有模型中存在的不合理现象。并利用VISSIM仿真确定换道阈值,然后再根据matlab编程对改进后两车道交通流格子模型进行了模拟分析,结果表明了改进模型的合理性与优越性,证实了改进模型在描述车辆换道的过程和趋势方面与实际更为相符。
In order to find out the inherent law of two-lane traffic flow and describe the lane changing behavior more actually,the deficiency in existing traffic flow lattice model was analyzed,and an improved two-lane traffic flow lattice model was proposed by improving traffic flow transfer rate model through introducing lane changing coefficient and lane changing threshold.The model overcome illogical behavior of the existing model.The lane changing threshold was determined by using VISSIM simulation and then simulation analysis of the improved model was performed with MATLAB programming.The results show that the improved model is rationality and superiority,and it is much closer to describe the actual lane changing behavior.
出处
《公路交通科技》
CAS
CSCD
北大核心
2011年第11期131-137,共7页
Journal of Highway and Transportation Research and Development
基金
中央高校基本业务费项目(M2009013)
关键词
交通工程
流量转移率模型
数值模拟
两车道交通流格子模型
换道系数
换道阈值
traffic engineering
traffic flow transfer rate model
numerical simulation
two-lane traffic flow lattice model
lane changing coefficient
lane changing threshold
