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针对指路标志的标识功能,分析了指路标志的特征,提出了指路标志项的概念。基于路网拓扑结构,构建了以指路标志项为基本单元的指路标志标识系统的数据模型,使得在计算机中建立指路标志的信息管理及自动设计分析应用系统成为可能。最后,在此数据模型的基础上,开发了一个基于GIS平台的指路标志标识计算机应用系统。该系统能对指路标志进行自动设计、根据交通规则的修改对指路标志执行自动更新,说明本文提出的数据模型是有效可行的。
Aiming at the identification function of the guide mark, the characteristics of the guide mark are analyzed and the concept of the guide mark item is proposed. Based on the topology of the road network, a data model of the road marking identification system with the road marking items as the basic unit is constructed, which makes it possible to establish the information management of the road marking in the computer and to automatically design and analyze the application system. Finally, on the basis of this data model, a computer application system of road sign marking based on GIS platform has been developed. The system can automatically design the road marking, automatically update the road marking according to the traffic rules modification, which shows that the data model proposed in this paper is effective and feasible.