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Delay analysis at a signalized T intersection

机译：信号化T交叉点的延迟分析

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The objective of this study is to analyze delay at signalized intersections using micro simulation approach. Traffic signal delay is one of the major problem people face in urban areas. An effective traffic signal timing and phasing arrangement has to be implemented to optimize the delay for all vehicle moments through the junction. Apart from signal timing arrangement, other factors such as geometry also influence the delay at an intersection. The aim of the research is to analyze and find the parameters influencing the delay at a signalized intersection and get an optimize condition which can reduce the delay at the selected junction. For the case study Katubedda Junction has been selected. The traffic simulation software vissim has been used for the analysis. Calibration of the vissim model to Sri Lankan conditions was achieved by changing the driving behavior parameters of the software model and matching the propagated queue length in model with actual queue length. Some of the causes of the delay were identified and those geometrical and signal timing changes were categorized into three different alternatives. All three alternatives were modeled in the software with the existing condition as the base case. The results show that changes in signal timing arrangement and changes in the geometrical arrangement has to be done to reduce the delay at the selected location.
机译：本研究的目的是使用微型仿真方法分析信号交叉口的延迟。交通信号延迟是城市地区面临的主要问题之一。必须实施有效的交通信号定时和阶段布置，以优化通过交界处的所有车辆时刻的延迟。除了信号时序布置外，诸如几何形状之类的其他因素也会影响交叉点的延迟。该研究的目的是分析并找到影响信号交叉路口延迟的参数，并获得优化条件，这可以减少所选结的延迟。对于案例研究，已选择Katubedda结。流量仿真软件Vissim已用于分析。通过改变软件模型的驾驶行为参数来实现Vissim模型的校准，并通过实际队列长度匹配模型中的传播队列长度来实现斯里兰卡条件。鉴定了一些延迟的原因，并且将几何和信号时序变化分为三种不同的替代方案。所有三种替代方案都以现有条件为基础的软件建模。结果表明，必须执行信号时序布置的变化和几何布置的变化以减小所选位置的延迟。

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