基于速度一致性的限速标志限速合理性研究

Research on Speed Limit Rationality of Speed Limit Sign Based on Speed Consistency

为研究路网限速标志限速的合理性,基于限速与运行速度及设计速度的关系,将速度一致性的概念引入限速标志限速合理性的研究中,运用主成分分析法获取限速一致性的综合评估指标。同时,以江苏省高速公路与高速公路衔接道路上的限速标志设置为例,对文中提出的方法予以分析验证。结果显示,该方法对于限速标志合理性的判断具有较好的效果。

In order to study the speed limit rationality of the speed limit sign in the road network, the relationship between speed limit and running speed and design speed was introduced at first. Secondly, the concept of speed consistency was introduced into the study of the speed limit of the speed limit sign. And the principal component analysis method was used to obtain the comprehensive evaluation index of the speed limit consistency. Finally, taking the speed limit sign one expressway connecting road in Jiangsu Province as an example, the proposed method was analyzed and verified. The result shows that the method has a good effect on the judgement of the rationality of the speed limit sign.