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智能交通系统 (ITS)的各种功能是以信息为中心展开的 ,因而信息应用是 ITS最为核心的研究内容之一。该文依托具有层次化特征的面向信息应用的 ITS体系结构 ,基于对 ITS的时空属性、媒介属性、层次属性、质量属性、存储属性、通讯属性、安全属性和主题属性等各种信息特征的分析 ,借鉴面向对象思想 ,提出了适用于 ITS信息交换的信息模型 ,该模型具有面向对象、自描述、自操作等特征 ,能有效地满足 ITS中不同层次信息交换的需求 ;另外还结合 ITS信息应用系统阐述了常规的信息交换模式
The various functions of Intelligent Transportation Systems (ITS) are information-centric, so information application is one of the most important ITS research content. This paper relies on the hierarchical structure of information-oriented ITS architecture. Based on the analysis of various information features such as ITS spatial-temporal attributes, media attributes, hierarchical attributes, quality attributes, storage attributes, communication attributes, security attributes and thematic attributes , Draws lessons from the object-oriented thought, proposes the information model suitable for ITS information exchange, which has the characteristics of object-oriented, self-describing and self-operation, and can effectively meet the requirements of information exchange at different levels in ITS. The system expatiates the conventional mode of information exchange