ABSTRACT

The location of highway signs has a significant impact on timely route-finding and also on avoiding potential driver confusion. This paper proposes an approach based on three-dimensional spatial analysis to determine the best attributes for signs and traffic flow concerning the visibility of signs. The position, height and perceived area of signs; maximum speed limit; and size of cars were utilized as indicators. Traffic flow was simulated using the Nagel-Schreckenberg model, while other vehicles were considered as dynamic obstacles. The performance of the proposed approach was evaluated in a case study by designing different scenarios. The results reveal that the proposed method can be used as an appropriate tool for evaluating the visibility of existing signs along highways and for determining the optimal place and height for new signs in three-dimensional, based on several parameters such as the maximum allowable speed, traffic flow, average density, and type of vehicles.

摘要

高速公路标志的位置对及时找到路线以及避免潜在的驾驶员混淆具有重大影响。本文提出了一种基于三维空间分析的方法来确定与标志可见性有关的标志和交通流的最佳属性。标志的位置、高度和感知区域；最高速度限制；和汽车的大小被用作指标。使用 Nagel-Schreckenberg 模型模拟交通流，而其他车辆被视为动态障碍物。通过设计不同的场景，在案例研究中评估了所提出方法的性能。