文章编号：1672-5328（2006）03-0047-06

孙明正1 杨晓光2
（1. 北京交通发展研究中心，北京 100053； 2. 同济大学交通工程系，上海 200092）

摘要：在回顾我国交通工程发展历程的基础上，提出了目前工作中的一个遗漏环节———交通设计。通过对目前交叉口空间设计范围以及设计中存在问题的分析，提出在我国机动车与非机动车混行严重的情况下，合理的交叉口空间设计思想，和以满足效率、安全和环境指标为目的的交通设计方法和设计流程。对在设计中如何考虑路网饱和度均衡、交通流运行顺畅、舒适、道路资源充分利用、安全、环境协调等因素给予了详细的分析论述。并通过实例说明交叉口空间设计方法的应用，对交叉口空间设计中空间尺度的不合理认识给予了回应。

关键词：交叉口；交通设计；混合交通流；饱和度；安全

中图分类号：U491.2+3

文献标识码：A

Methods for Spatial Layout Design of Urban Street at-Grade Intersections

SUN Mingzheng1，YANG Xiaoguang2
（1.Beijing Transportation Research Center, Beijing 100053, China ; 2.Department of Traffic Engineering，Tongji University，Shanghai 200092，China ）

Abstract: By review of practices of traffic engineering in China, it was found that traffic design, a key element of traf-fic engineering, is missing in our current routines. Through an analysis of problems existing in intersection design scope and the design per se, and under the conditions of the heavily mixed motor and non-motor traffic in China, this paper pre-sents some ideas for intersection layout design. The design methods and procedures proposed here are intended to meet the requirements of operation efficiency, safety, and environ-mental considerations. Issues regarding how to balance v/c ratios of road network, to smooth and comfort traffic move-ments, to make full use of road resources, to improve safety, and to coordinate environmental problems are discussed in details. An example is included to explain how to use these methods, together with a response to the misunderstanding of the intersection spatial layout design methods.

Key words: intersection; traffic design; mixed traffic flow; saturation; safety