交通信息与安全2018，Vol.36Issue(2)：47-53,7.DOI:10.3963/j.issn.1674-4861.2018.02.007
雾天环境下高速公路可变限速控制方法研究
A Traffic Control Method for Freeways Using Variable Speed Limits under Foggy Weather
摘要
Abstract
Fog leads to a decline of visibility on freeways,which decreases safety and efficiency of traffic.A variable speed limit(VSL)control scheme for freeways under foggy weather conditions is proposed,including system design, workflow,and VSL operation strategy,etc.The speed limit of target sections is determined based on data of real-time road visibility and traffic flow,factors including the maximum safe speed,traffic state and non-compliance behaviors of drivers,etc are considered.Data collected from the G4 freeway and simulations are analyzed by Vissim.The results show that compared with no control scheme,the proposed scheme can increase the lowest speed in advection(agglomerate)fog by 27.24%(28.54%)and decrease the maximum speed difference of adjacent link by 26.42%(41.91%).This VSL control scheme is more effective in agglomerate.Furthermore,it ensures traffic safety and improves efficiency of freeways in foggy weather.关键词
交通控制/高速公路/可变限速控制/控制策略/雾天环境Key words
traffic control/freeway/VSL/control strategy/foggy weather分类
交通工程引用本文复制引用
张珊,张存保,李薇..雾天环境下高速公路可变限速控制方法研究[J].交通信息与安全,2018,36(2):47-53,7.基金项目
国家自然科学基金(51578432)、武汉市青年科技晨光计划项目(2016070204010124)、云南省交通运输厅科技计划项目(2016A05)资助 （51578432）
