摘要
交叉口上游存在交织段,在城市道路中是十分普遍的现象,它一方面决定了交叉口各流向车流到达率,同时自身的运行情况又受交叉口红灯排队的影响。根据车流在交叉口到达驶离特性,从定性分析和定量计算两方面研究了上游交织段对信号交叉口通行能力的影响。基于对交织段影响下的交叉口理想到达率的分析,建立了考虑交织段情况下的车道组通行能力计算模型,并通过仿真对模型进行了检验。研究发现,交织段长度、进口道长度对通行能力起主要影响,而且增加交织段长度对于提高进口道通行能力更为重要。
Signalized intersections with weaving segment upstream are very common on urban roads. On one hand, weaving segment determines the arrival rate of the approach, and on the other hand, the operational condition itself is affected by the queue accumulation during red time. According to the character of arrival and departure of vehicles at the signalized intersection, the impact of weaving segment on the capacity of the signalized intersections was analyzed qualitatively and quantitatively. Based on the analysis of ideal arrival rate under the effect on weaving segment, the model of lane group＇s capacity was established, and tested with simulation method. According to the research, the length of weavingsegment and approach plays the dominant role, and in order to improve the capacity of approach lengthening, the weaving segment is more important.
出处
《交通与计算机》
2008年第2期53-56,61,共5页
Computer and Communications
基金
国家自然科学基金项目资助(批准号:50578123)
关键词
交通工程
通行能力
仿真检验
交织段
traffic engineering
traffic capacity
simulation test
weaving segment
