排阵式交叉口交通安全分析及鲁棒优化模型
Analysis of Traffic Safety and Robust Optimization Model for Tandem Intersection
投稿时间:2018-06-07  修订日期:2019-05-04
DOI:10.11908/j.issn.0253-374x.2019.07.010     稿件编号:    中图分类号:U491.5
 
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中文摘要
      针对排阵式交叉口的交通设计及控制方法,运用交通冲突技术对排序区交通运行安全进行分析,结果显示交通流量是排阵式交叉口交通安全主要影响要素之一.在此基础上,考虑进口道交通流量随机波动的特性,建立了排阵式交叉口鲁棒优化模型,采用改进的NSGA II算法进行求解,运用主客观信息偏差最小法(MDASOI)对优化结果进行决策分析得到最优鲁棒优化配时方案.实例分析及对比结果表明:该模型充分考虑进口道交通流量随机波动的干扰影响,可得到更加优化的配时方法,与传统美国高速公路通信能力手册(HCM)及澳大利亚公路研究局手册(ARRB)配时方法相比,该模型可降低延误指标约28.80%和6.29%,降低最大排队长度约32.43%和7.41%.与实例方案相比,优化方案可降低左转及直行交通冲突约23.8%和11.1%,提高了交叉口的安全效益.
英文摘要
      Aiming at the traffic design and signal control for the tandem intersection, the traffic conflict technology was used to analyze the traffic safety of the sorting area. The results show that the traffic volume is one of the main factors. On this basis, the robust optimization model of tandem intersection was established by taking the stochastic variation of the traffic volume into consideration. Then, the improved NSGA-II algorithm was used to solve the model and the minimum deviation analysis for subjective and objective information(MDASOI) method was used to analyze the optimization results and the robust optimal scheme was obtained. Case analysis and comparison results show that the proposed model can get an optimal timing method by taking into account the interference of import traffic volume stochastic variation. Compared with the traditional Highway Capacity Manual(HCM) and Australian Road Research Board(ARRB) timing method, this model could reduce the average vehicle delay of about 28.80% and 6.29% and the maximum queue length of about 32.43% and 7.41%. Compared with the example scheme, the optimization scheme of this model can reduce traffic conflicts of the left and right by 23.8% and 11.1%, which improves the safety benefit of the whole intersection.
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