中文摘要：

城市道路网络交通小区是为了减少交通控制和管理系统的复杂性，提高系统可靠性及系统开发的需要而提出的．文中分析了交通小区在交通分析系统中的研究定位，基于交通关联度和交通相似度的解析，提出了交通小区的基本概念及数学描述，并对交通控制小区和交通诱导小区的目标、指标、层次等进行了对比分析，为交通小区的后续动态智能划分研究奠定了理论基础．

英文摘要：

In order to reduce the complexity of traffic control system and management system, and increase the performance and reliability of systems, and develop the systems, the concept of traffic area in urban road network is proposed. This paper analyzed the status of traffic area in the traffic analysissystem. Based on traffic correlation and traffic similarity, it presented the basic concept and mathematical description of traffic area. Also, it compared traffic area of traffic control system with traffic area of route guidance system. These lay the theoretical foundation to the following research of traffic arears dynamic intelligent division.