实践表明，通过对现有交叉口的改善设计，可显著提高交叉口的服务水平，收到事半功倍的效果。本文就城市道路平面交叉口交通设计模式进行研究。%The practice shows that through the design of the improvement of the existing intersection, we can significantly improve the service level of intersection, get twice the result with half the effort. In this paper, the urban road intersection traffic design patterns are studied.
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