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介绍智能交通系统（ＩＴＳ）的基本概念、主要功能、系统的基本结构以及ＩＴＳ系统在国内外的发展现状，并提出了一个基于ＳＯＮＥＴ网络的ＩＴＳ通信系统解决方案。
This paper introduces the basic concepts, main functions, the basic structure of ITS and the status quo of ITS system development at home and abroad, and presents a ITS communication system solution based on SONET network.