不同能见度条件下高速公路车辆速度特性研究

发布时间：2018-06-15 19:38

本文选题：交通工程 + 速度特性　；参考：《交通运输系统工程与信息》2014年06期

【摘要】：本文以京港澳高速公路湖北省内金山—武汉南路段内的交通流检测器及其附近设置于路侧的公路气象站的历史数据为主要研究数据,针对雾天低能见度等天气因素,分析有无雾及不同能见度条件对车辆速度均值及速度离散型的影响;研究在雾天条件下,不同车道位置、不同车辆类型、不同时间时段的车辆行驶速度的差异性;基于交通流Greenshield经典V-K关系,采用非线性回归方法,建立雾天车辆平均行驶速度综合预测模型,模型的拟合优度达到80%.研究成果对研究公路沿线能见度因素对行车安全影响,分析雾天等低能见度条件下的公路通行能力,制定雾天等低能见度条件下可变速度控制等交通控制措施具有重要参考与借鉴意义.
[Abstract]:In this paper, the historical data of the traffic flow detector in the Jinshan Wuhan South Road in Hubei Province on the Beijing Hongkong and Macao Expressway and the road meteorological station near the road side are the main research data. In view of the weather factors such as low visibility and other weather factors, the influence of fog and different visibility conditions on the mean and speed discretization of vehicle speed is analyzed. The difference of vehicle speed in different lane position, different vehicle types and different time periods is studied under the condition of fog. Based on the classic V-K relationship of traffic flow Greenshield, the nonlinear regression method is used to establish a comprehensive prediction model of vehicle average driving speed in fog. The goodness of fit of the model reaches the research results of 80%. research on the highway. The visibility factors along the line have an important reference and reference significance to traffic control measures, such as the analysis of road traffic capacity under the low visibility conditions, and the formulation of variable speed control under the condition of low visibility under fog.
【作者单位】：北京工业大学城市交通学院;交通运输部公路科学研究院公路交通安全技术交通行业重点实验室;湖北省京珠高速公路管理处;
【基金】：国家自然科学基金(51108214) 公益性行业(气象)科研专项(GYHY201306043)
【分类号】：U491

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