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一、现有道路交通项目研究的基本模式 城市道路交通项目研究是一项系统工程，其组织和管理模式形式多样，所涉及的内容方方面面，按照其层次结构划分，现有研究模式基本分为以下三种： 上述三种模式各有特点，具体采取何种方式，应该与实际情况相结合。 二、现有模式存在的主要
First, the basic model of the existing road traffic project research Urban road traffic project research is a systematic project, its organization and management of various forms, all aspects involved, according to their hierarchical structure, the existing research model is basically divided into the following Three kinds: The above three kinds of modes have their own characteristics, and the specific ways taken should be combined with the actual situation. Second, the main existing mode exists