Abstract: This paper describes the latest achievement of Chinese National ITS Architecture by the project of ‘Research on Chinese ITS architecture and Development of Support System for ITS Architecture Development’. Frist,the revision of the first version of Chinese National ITS Architecture,including the improvement of the theory and method of ITS Architecture development,update of ITS user services,reversion of the content of National ITS Architecture,are presented.Then,the activities of developing a customized software for support of ITS Architecture development are described in detail. Finally,this paper introduces the
Development of two regional ITS Architecture.

Key words: ITS, architecture, Chinese National ITS Architecture Version 2, ITSA-CASS

摘要： 国家智能交通系统工程技术研究中心承担了国家“十五”科技攻关项目《智能交通系统体系框架及支持系统开发》，目前该项目的研究工作已经基本完成。本文通过对该项目研究成果的总结，系统介绍了中国ITS体系框架研究的最新进展。一是中国ITS体系框架（第二版）的修订情况，包括体系框架开发理论与方法的完善、中国ITS用户服务的更新、国家框架内容的全面修订等；二是支持体系框架编制全过程的软件系统（ITSA-CASS）的开发和应用情况；三是地方ITS体系框架的编制情况。

关键词: 智能交通系统（ITS）, 体系框架, 中国ITS体系框架第二版, ITSA-CASS软件