车辆高速驾驶临界安全距离  

Study On Critical Safety Distance Among High Speed Moving Vehicles

作　　者：卢文玉[1] 毛建国[1] 李忠[1] 武超[1] 张延召[1] 凌锐[1] 

机构地区：[1]南京航空航天大学能源与动力学院,南京210016

出　　处：《重庆理工大学学报（自然科学）》2010年第9期13-18,共6页Journal of Chongqing University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(50776044)

摘　　要：在考虑到高速公路上前后车的相对速度对临界安全距离影响的情况下,分析车辆的制动过程,研究不同路况下最大制动减速度的变化,对驾驶员反应时间、制动协调时间和减速度增长时间进行了合理设置,在以上分析的基础上建立高速公路临界安全车距模型,并进行仿真分析。仿真结果表明:本临界安全距离模型更具有合理性。After considering the influences of the relative speed of front and back vehicles in highway on the critical safety distance,the braking process is analyzed,the variety of the maximal deceleration in different road situations is studied,and a reasonable assumption for the drivers＇ response time,coordination time and braking increase time is made.Finally,this paper builds the critical safety distance model to do simulatation.The result from the simulation shows that the critical safety distance from the model is more reasonable.

关 键 词：临界安全车距 最大制动减速度 高速公路 车辆防撞预警系统 追尾事故 

分 类 号：U458[建筑科学—桥梁与隧道工程]