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Estimation of left-turn capacity at the unsignalized intersection
Simulation Modelling Practice and Theory ( IF 3.5 ) Pub Date : 2020-08-25 , DOI: 10.1016/j.simpat.2020.102170
Nenad Ruškić , Valentina Mirović

The capacity of unsignalized intersections is a significant value that indicates traffic conditions as well as network performance at urban and rural roads. These intersections are the most numerous on the road network. Inaccurate determination of unsignalized intersections capacity can give a misconception of the traffic conditions on the network. Researches about unsignalized intersections are mostly based on HCM and Harders' / Siegloch formula for capacity calculation. Measuring capacity values in real traffic flow under continuous queue conditions showed a significant deviation from the theoretical capacity values. The simulation of traffic flows in two different traffic capacity software also showed the difference in the simulated environment from theoretical capacity. Software based on HCM (Synchro) showed the same values as HCM in theoretical capacity, but different values in dynamic simulation (Simtraffic module). AnyLogic software based on the different model showed lower capacity values (very close to measured on-field values) than the theoretical model. Findings from this study can be used for improvement of capacity analysis model as well as software for this purpose.



中文翻译:

估计无信号交叉口的左转弯能力

无信号交叉路口的通行能力是一个重要的值,它指示交通状况以及城市和乡村道路的网络性能。这些交叉路口是道路网络上最多的路口。对未信号交叉口容量的不正确确定可能会误解网络上的交通状况。关于无信号交叉口的研究大多基于HCM和Harders'/ Siegloch公式进行容量计算。在连续排队条件下,在实际交通流量中测量容量值显示出与理论容量值的显着偏差。在两个不同的通行能力软件中对交通流进行的仿真也显示了在仿真环境中与理论通行能力的差异。基于HCM的软件(Synchro)在理论容量上显示与HCM相同的值,但在动态仿真(Simtraffic模块)中显示的值不同。基于不同模型的AnyLogic软件显示出比理论模型更低的容量值(非常接近实测值)。这项研究的结果可用于改进容量分析模型以及用于此目的的软件。

更新日期:2020-08-25
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