Solving capacity using Traffic Imitation Model
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摘要: 提出了利用交通仿真模型分析交通设施通行能力的一般方法,即特性分析、建模描述、模型标定、模型验证和实验求解.介绍了高速公路基本路段交通流特性及其通行能力影响因素的分析过程,说明了高速公路基本路段仿真模型总体框架,经过实测数据对仿真模型的标定和验证,证明了仿真模型在预测流量-速度-密度关系时与实际情况的相对误差仅为5%最后,通过一系列仿真实验,求解出了理想条件下高速公路基本路段的通。行能力为( 2 200辆/ h)/车道.Abstract: A methodology for capacity analysis using taffic simulation is provided in this paper. The methodology includes five components, they are characteristics analysis, model description, calibration, validation and experiment solution. As an analysis case, basic expressway section is analyzed. The characteristics of traffic flow in basic expressway section and affecting factors on capacity are described. The frame of basic expressway section simulation model is provided. After calibration and validation, the simulation model is proven that its relative error is only within 5 % in predicting the relationship of volume, speed and density. Finally, the capacity of basic expressway section is calculated as 2 200 veh/ h/lane under ideal conditions on the basis of analyzing a serial of simulation experiments.
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Keywords:
- imitation model /
- capacity /
- expressway /
- basic section
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