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超速是道路交通事故的主要致因之一。为研究限速标志设置效果,在分析了限速、设计速度与运行速度三者关系基础上,提出了速度一致性理念,运用定量的因子分析法和定性的速度曲线图示法对限速标志在限速值一致性方面予以评估。依托“某地市国省道限速标志设置效果评估”项目,基于某地市国道交通及速度观测统计数据,绘制了限速-运行速度曲线,对其速度一致性进行了定性评估,并对限速标志的设置提出了改善建议。
Speeding is one of the major causes of road traffic accidents. In order to study the setting effect of speed limit sign, based on the analysis of the relationship between speed limit, design speed and operating speed, the conception of speed consistency was put forward. Using the quantitative factor analysis method and the qualitative speed curve diagram, Evaluated for speed limit consistency. Relying on the project of “Assessing the effect of setting speed limit signs in a certain city and country”, a speed-limit-speed curve was drawn based on the traffic and speed observation statistics of a certain city and city, and its speed consistency was evaluated qualitatively. And put forward suggestions for improving the setting of the speed limit sign.