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交叉口流线动态控制的优化配时模型研究

Keywords: 交通工程,动态控制,动态延误分析法,优化配时模型,相容流线,动态组合

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Abstract:

针对城市交叉口信号控制仍以单点固定相位方式为主,且配时优化方法不能随交通流线的状态变化而优化的问题,以交通流线相容且绿灯损失最小为原则,根据交叉口进口流线流量动态生成了最优流线组合的相位。在确定周期相位组合的情况下,考虑周期结束流线是否有车滞留,对应分析了流线车辆平均延误。将延误模型组合,建立了适应交叉口流线流量动态变化的优化配时模型,计算了各相位的最优配时,以实现交叉口流线动态优化控制效果。实例计算分析表明采用流线动态控制配时优化模型延误更小,对改善交叉口运行状况更为有效。

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