高速公路85%位车速特征分析及车速限制建议  

Analysis on Characteristic of 85th Percentile Speed and Suggestion on Speed Limit of Freeway

作　　者：程国柱[1] 裴玉龙[1] 

机构地区：[1]哈尔滨工业大学交通研究所,黑龙江哈尔滨150090

出　　处：《公路工程》2008年第1期62-66,共5页Highway Engineering

基　　金：黑龙江省科技攻关计划项目(GB05D301-2)

摘　　要：对高速公路不同线形条件和交通条件下的分车道、分车型85%位车速特征进行了分析,建立了高速公路不同行驶方向的曲线半径、转角及曲线长度与不同车型85%位车速的多元线性回归模型,给出了上坡路段需进行车速限制的临界坡度;分别对高速道路交通量和交通组成与85%位车速的关系进行了研究,给出了自由流条件下车速的分布范围,建立了大型车混入率与85%位车速的关系模型;对比分析了高速公路雨天与晴天的车速,得出了小雨天气对车速影响不大的结论。This paper analyzes on 85th percentile speed of different lane and vehicle type under different alignment condition and traffic condition. The multi-linear regression models are established between curve radius, angle, curve length and 85th percentile speed of different direction on freeway. Critical up-slope is given to need speed limit. The relationships are studied between traffic volume, traffic composition and 85th percentile speed of freeway. Speed distribution scope is presented under the condition of free flow. The relationship model is established between intermingling ratio of large vehicle and 85th percentile Speed. Speed comparison is performed between rain and sunshine on freeway and the conclusion is presented that flurry has little influence on speed.

关 键 词：高速公路 85%位车速 线形条件 交通条件 车速限制 

分 类 号：U491.25[交通运输工程—交通运输规划与管理]