高速公路可变限速优化控制模型

发布时间：2018-05-10 17:08

  本文选题：高速公路 + 可变限速模型　； 参考：《福州大学学报(自然科学版)》2017年02期

【摘要】：针对METANET基本模型在预测交通拥堵路段时误差较大的缺陷,对车速和流量模型进行修正.提出高速公路可变限速修正模型并确定了可变限速阈值和变化频率;应用仿真对模型进行校准、验证和应用效果分析.仿真结果显示,修正模型的应用可降低交通总运行时间28.6%~33.2%,提高通过总车公里数1.8%~3.0%,提高通过总交通量2.00%~3.27%,证明了修正模型的适应性和有效性.可变限速变化阈值取10 km·h-1及变化频率取5 min时的组合效果最佳,可降低交通事故率50%.
[Abstract]:Aiming at the defects of METANET basic model in predicting traffic congestion, the speed and flow models are modified. A modified model of variable speed limit for freeway is put forward, and the threshold and frequency of variable speed limit are determined, and the model is calibrated by simulation, verified and the effect of application is analyzed. The simulation results show that the application of the modified model can reduce the total running time of the traffic by 28.6and 33.2and increase the number of kilometers through the total vehicle by 1.8and 3.0. the total traffic volume of 2.00 and 3.27 can be increased, which proves the adaptability and effectiveness of the modified model. When the variable speed limit threshold is 10 km h ~ (-1) and the change frequency is 5 min, the combination effect is the best, and the traffic accident rate can be reduced by 50%.
【作者单位】： 福州大学土木工程学院;
【基金】：福建省自然科学基金资助项目(2016J01230)
【分类号】：U491.4
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本文编号：1870150