中文摘要：

结合公路地理信息系统的开发实践，分析与讨论了公路地理信息系统数据特征，提出了公路地理信息的多源数据、线性参照系和动态分段的数据模型结构设计与技术实现的途径与方法．

英文摘要：

Combined with the road geographic information system development practice, the paper analyzes and discusses the feature of the road geographic information system data, points out the model structural design and the technical realization way and the method of the multiple source data, the linear reference system and the dynamic partition data of the road geography information.