指路标志与路面文字协同设置安全距离研究

Research on the Safety Distance Setting of Guiding Signs and Road Text

为解决交通指路标志信息量过多或遮挡等原因导致的驾驶人正常视认受阻的问题,考虑车辆速度、驾驶人视认特性,以及标志与标线设置位置等多方面影响因素,提出了协同距离的概念,选取城市主干路作为研究对象,进行了模拟驾驶实验.比较了路面文字的施画对不同信息量指路标志视认效果的改善作用,分析了指路标志上各版面位置对改善作用的影响,构建了在不同设计速度、不同信息量共6种情况下,路面文字和指路标志协同设置的安全距离模型,并得到二者的最佳设置间距,作为城市主干路交通标志与标线协同设置的参考数值.

In order to solve the problem that the driver’s normal visual recognition is blocked due to too much information or occlusion of traffic guide signs,the concept of cooperative distance was put forward considering many influencing factors such as vehicle speed,driver’s visual recognition characteristics,and the location of signs and markings.Taking the urban trunk road as the research object,the driving simulation experiment was carried out.The improvement effect of pavement writing on the visual recognition effect of road signs with different information amounts was compared,and the influence of each layout position on the road signs on the improvement effect was analyzed.In this paper,a safety distance model for cooperative setting of pavement characters and road signs under six conditions of different design speeds and different information amounts was constructed,and the best setting distance between them was obtained as a reference value for cooperative setting of traffic signs and marking lines on urban trunk roads.