基于车辆个体特征的IDM模型研究  

IDM Model Based on Individual Features

作　　者：敬明[1] 邓卫[1] 刘志明[2] 王昊[1] 

机构地区：[1]东南大学交通学院,南京210096 [2]天津市渤海城市规划设计研究院,天津300451

出　　处：《交通信息与安全》2012年第5期10-13,共4页Journal of Transport Information and Safety

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

摘　　要：现有的跟驰模型大多基于标准驾驶行为建立,未能真实体现车辆的个体差异。文中将反应时间和车型作为车辆的个体特征加入IDM跟驰模型中。假设反应时间在驾驶员人群和单个驾驶员的反应过程中都存在离散,采用车辆尺寸,加减速性能和车头时距等要素描述不同车型的差异,建立了考虑反应时间和车型的跟驰模型。对信号灯放行状态和稠密交通流中扰动传播的仿真表明,考虑反应时间和车型的跟驰模型能较好体现交通系统的随机性和异质流特征,仿真效果与实际更加契合。Most current car following models are based on standard driving behavior and seldom reflect individual features of vehicles. In this paper, reaction time and vehicle type are added to IDM model as features of cars. Assuming that reaction time disperses between drivers and during the reaction process of a single driver, adopting car size, perform- ance and time headway as features to describe differences between various vehicle types, this essay establishes an IDM model with reaction time and vehicle type. Numerical simulation shows that randomness and heterogeneous character of traffic system can be simulated by the proposed model, which provides simulation results that fits the actual situation per fectly.

关 键 词：交通工程 跟驰模型 个体差异 反应时间 车型 

分 类 号：U491[交通运输工程—交通运输规划与管理]