基于跟车行为的双车道交通流元胞自动机模型  

Two-lane cellular automaton traffic model based on car following behavior

作　　者：敬明[1] 邓卫[1] 王昊[1] 季彦婕[1] 

机构地区：[1]东南大学交通学院,南京210096

出　　处：《物理学报》2012年第24期323-331,共9页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:51008074;50908051);教育部博士点基金(批准号:20090092120047)资助的课题~~

摘　　要：结合跟车行为中车辆相对运动的影响和安全驾驶条件,引入换道规则,提出了基于跟车行为的双车道元胞自动机模型.模型可以描述系统在临界密度附近的亚稳态性质,其仿真结果与实测数据符合很好.在对车辆换道仿真数据采集处理的基础上,研究满足换道条件的车辆数和车辆密度间的关系,定义了换道函数描述标准驾驶行为下的车辆换道过程,求得函数的解析解并使用函数预测经换道达到稳定的车辆密度值,为量化和深入研究车辆的换道行为提供参考.With considering the influence of relative motion of vehicles in car following behavior, safe driving conditions and lane changing rules, a two-lane cellular automaton traffic model is proposed based on car following behavior, which is able to illustrate the system＇s metastable state near the critical point and produce simulation results that accord with observed data. With simulation data on lane changing behavior, a study is conducted on relationship between traffic density and number of vehicles meeting lane changing condi- tions. Lane changing function is defined to describe lane change process under standard driving behavior. Analytical solution of the function is obtained and used to predict traffic density that stabilizes after lane change process, which contributes to further research on vehicle lane changing behavior.

关 键 词：元胞自动机 亚稳态 换道规则 数值模拟 

分 类 号：U491.112[交通运输工程—交通运输规划与管理]