初始条件对驾驶员逐日路径选择行为和网络交通流演化的影响  

Influence of Initial Conditions on Drivers' Day-to-Day Route Choice Behavior and Network Traffic flow Evolution

作　　者：刘诗序[1] 关宏志[1] 严海[1] 

机构地区：[1]北京工业大学交通工程北京市重点实验室,北京100124

出　　处：《交通信息与安全》2012年第1期58-62,共5页Journal of Transport Information and Safety

基　　金：国家自然科学基金(批准号:50978008);北京市自然科学基金(批准号:8102007)资助

摘　　要：从查阅到的文献可以看到,在驾驶员逐日路径选择行为及网络交通流演化的研究中,均假定驾驶员第1天对路径的理解行程时间相同,也即初始条件中没有考虑驾驶员的个体差异性。首先,对初始条件和驾驶员逐日路径选择过程建模,在2条平行路径的简单路网中,运用Agent仿真方法模拟了不同初始条件下驾驶员逐日路径选择过程。结果表明:路网达到平衡所需的时间与驾驶员对历史信息的依赖程度显著相关,而与第1天驾驶员对路径行程时间理解的相关差异性不显著;路网平衡和用户平衡的差别与两者均显著相关。虽然在不同情况下路网均能够达到近似的用户平衡状态,但是平衡时驾驶员对2条路径的理解行程时间存在较大差异。From previous studies of drivers＇ day-to-day route choice behavior and network traffic flow evolution,it is assumed that the first day＇s perceived travel time on route is the same.In other words,the diversity of drivers is not taken into account in the initial conditions.Firstly,initial condition and drivers＇ day-to-day route choice process are modeled.Then,drivers＇ day-to-day route choice process in a simple road network with two parallel routes is simulated by Agent simulation method.The results show that the time required when network reaches equilibrium is significantly associated with drivers＇ reliance on the historical information but is not significantly associated with the differences of drivers＇ perceived travel time on routes on the first day.However,the difference between network equilibrium and user equilibrium is both significantly associated with the two factors.Moreover,although network equilibrium under different conditions is similar to user equilibrium,drivers＇ perceived travel time on the two routes is quite different when network reaches equilibrium.

关 键 词：交通工程 路径选择行为 系统演化 初始条件 网络平衡 AGENT仿真 

分 类 号：U491[交通运输工程—交通运输规划与管理]