高速公路半幅封闭施工区限速标志效能试验  

Effectiveness test of speed-limit sign in one-way closed work zone for expressway

作　　者：贾兴利[1] 富志鹏[2] 许金良[1] 陈文辉[3] 景立竹 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064 [2]中交第一公路勘察设计研究院有限公司,陕西西安710075 [3]天津水泥工业设计研究院有限公司,天津300400 [4]德克萨斯大学奥斯汀分校Cockrell工程学院,德克萨斯奥斯汀78741

出　　处：《交通运输工程学报》2015年第4期93-100,共8页Journal of Traffic and Transportation Engineering

基　　金：交通运输部科技项目(2011 318 362 810);国家自然科学基金项目(51208047);中央高校基本科研业务费专项资金项目(310821151007)

摘　　要：采用现场试验与统计分析,研究了高速公路半幅封闭施工作业区交通标志尤其是限速标志的警示效能,提出了分阶限速方案和交通标志效能试验方案,选择典型路段开展了既有交通标志效能试验、限速标志位置试验、分阶限速效能试验和优化后交通标志效能试验。试验结果表明:既有交通标志尤其是限速标志效能不足,试验路段客货车经过限速标志后车速远高于限速值,且速度降低幅度很小。通过分阶限速优化交通标志设置,施工作业区车辆速度明显降低,客车速度降低38km·h-1,货车速度降低32km·h-1;施工作业区客车运行速度与限速值的差值从60km·h-1降低到15km·h-1,货车速差从40km·h-1降低到5km·h-1,基本达到限速值,整个交通流运行速度与限速值差值变化趋势一致。可见,分阶限速优化后的交通标志效能提高明显。The warning effectiveness of traffic sign, especially the speed-limit sign, in one-way closed work zone of experessway, was studied by using field tests and statistical analysis. The grading speed-limit program was proposed and the test program for traffic sign effectiveness was set up. A typical expressway section was chosen to test the effectivenesses of existing traffic sign, speed-limit sign position, grading speed-limit and optimizing traffic sign. Test result shows that the effectiveness of existing traffic sign, especially the speed-limit sign, is insufficient for speed-limit. In the expressway test section, after the vehicles pass through the speed-limit sign, they still have much higher speeds than the speed-limit values, and the speed reductions of the vehicles are very small. Through the optimization of traffic sign using grading speed-limit, the vehicles after passing through the work zone have significant reductions in their speeds, the speed of passenger car reduces by 38 km· h^-1 , and the speed of freight car reduces by 32 km· h^-1.The difference value between passenger car running speed and the speed-limit value has reduced from 60 km· h ^-1 to 15 km · h^-1 , this kind of speed difference value for freight ear is from 40 km· h^-1 to 5 km· h^-1 , the speeds of vehicles are very close to the speed-limit values, and the variation tendency of traffic flow speed is consistent with the speed-limit difference value, so the effectiveness of traffic sign is greatly improved by the grading speed-limit optimization. 3 tabs, 10 figs, 21 refs.

关 键 词：交通工程 限速标志 效能试验 半幅封闭施工区 运行速度 分阶限速 

分 类 号：U491.52[交通运输工程—交通运输规划与管理]