Abstract: This article is some research results of the national tenth-five year science and technology program. Analysis on ITS development and the difference between that in China and other foreign countries are presented．Then，the necessity of research on ITS evaluation in China is induced．The article discussed the characteristics and difficulties in evaluating ITS．Three-dimensional ITS evaluation framework is put forward based on three dimensions structure by A D Hall．ITS evaluation methods，including Cost benefit analysis，cost effectiveness analysis, and object-oriented method are provided, with a detailed analysis of applicability of each method．Finally, future development trend of ITS evaluation is also presented and the important role of Experimental Traffic Engineering in ITS evaluation is emphasized．

Key words: intelligent transportation systems(ITS), evaluation method, benefit analysis, mechanism analysis

摘要： 文章是国家“十五”科技攻关重点课题的部分研究成果，分析了ITS在国内外的发展现状以及存在的差异，指出在我国研究ITS 评价的必要性；进一步基于ITS 及其项目评价的特点与难点分析研究，应用霍尔三维结构构筑了ITS评价的三维框架，提出了面向对象的ITS评价方法，以及成本效益分析方法和成本效果分析方法，并讨论了各自的实用性。最后分析了ITS 评价的未来发展趋势，指出实验交通工程学在ITS 评价中的重要作用。

关键词: 智能交通系统(ITS), 评价方法, 效益分析, 机理解析