高速公路不同路况下的安全限速  

Safely-Limited Speeds on High Way in Different Road Conditions

作　　者：冯涛 李迅 丁德平 谢庄 

机构地区：[1]北京市气象服务中心,北京100089

出　　处：《气象科技》2012年第5期865-868,共4页Meteorological Science and Technology

基　　金："十一五"国家科技支撑计划项目"国家高速公路安全和服务技术开发与工程应用示范"资助

摘　　要：不同气象条件导致道面状况差异很大,为了提高不同道面状况条件下高速公路行车的安全性,从气象条件出发分析了干、湿、积雪、积冰道面条件对道路交通安全的影响,采用数学方法,以制动反应时间内行驶距离与制动距离之和小于能见距离为条件,推导了不同道面条件下的基于安全距离的高速公路最高车速限制值计算公式。利用双指数模型的纵向附着系数计算模型计算了附着系数,得出了不同道面条件下对应不同能见距离、附着系数的安全车速,为高影响天气条件下交通管理部门管理高速公路安全运行提供科学依据。Different meteorological conditions lead to different road surface conditions. In order to increase the safety level of driving on the different road conditions on high way, from the view of meteorological conditions, the influences of different road conditions, such as dry, wet, snow and ice on road traffic safety are analyzed. Using the method of the mathematical method, under the condition that the sum of running distance and braking distance is less than the visible distance, the calculation formulas of the maximum speed the different road conditions on the high way are derived based on the safe distance. The dual-exponential model is used to evaluate the longitudinal road friction coefficient, and the values of the corresponding safely limited speeds are computed according to different visible distance and road fiction coefficients.

关 键 词：高速公路 安全限速 附着系数 停车视距 

分 类 号：U492.84[交通运输工程—交通运输规划与管理]