基于安全和畅通交叉口合理间距的确定  

Determination of Reasonable Intersection Spacing Based on Safety and Smoothness

作　　者：董红利[1] 徐良杰[1] 朱顺应[1] 管菊香[1] 

机构地区：[1]武汉理工大学,武汉430063

出　　处：《交通与计算机》2007年第6期56-59,共4页Computer and Communications

基　　金：国家自然科学基金项目资助(批准号:50778141)

摘　　要：城市路网是城市交通与城市发展的骨架。目前,专业人员对于路网密度、交叉口间距(路网间距)的研究较少。文章分析了交叉口间距对于道路交通安全、畅通的影响,以Vissim仿真实验为基础,分析了交叉口间距与交通冲突的关系,得到以冲突率为指标的交叉口安全可靠度模型。分析了不同交叉口间距下的路网容量,推导出交叉口容量可靠度。从安全和畅通两方面效益平衡考虑,得到交叉口合理间距的确定方法,并通过示例进行分析验证。Road network is the backbone of the transportation and development of a city. Presently, there are less research on road network density and intersection spacing（road network spacing）. At first, in this paper the impact of intersection spacing on road safety and smoothness was analyzed. Second, the relationship between intersection spacing and traffic conflicts was analyzed based on Vissim simulation experiment. Thus, a model of intersection safety reliability was obtained, which took conflict ratios as index. Then, the road network capacity under different intersection spacing was analyzed. Thus, the intersection capacity reliability was deduced. At last, a method to determine the reasonable intersection spacing was gained with the consideration of safety and smoothness, which was validated though an example.

关 键 词：交叉口安全可靠度 容量可靠度 交叉口间距 交通冲突 

分 类 号：U491[交通运输工程—交通运输规划与管理]