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提出了诱导子区的概念,对诱导子区内诱导单元协调的重要性进行了研究.提出了相同路口诱导单元的协调策略,对同级诱导单元诱导信息的相互影响进行了探讨,在此基础上将协调区域扩大到上游诱导单元,对诱导子区内诱导单元协调策略进行了研究.作者进行了多次仿真试验并对有代表性的仿真结果进行了分析,从诱导状态估计的准确程度和诱导均衡度2个方面说明了诱导子区协调方法的有效性. 相似文献
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In many Chinese cities,motorized vehicles (M-vehicles) move slowly at intersections due to the interference of a large number of non-motorized vehicles (NM-vehicles).The slow movement makes a part of M-vehicles fail to leave intersections timely after the traffic signal tums red,and thereby conflicts between vehicles from two directions occur.The phenomenon was analyzed graphically by using the cumulative vehicle curve.Delays in three cases were modeled and compared:NM-vehicle priorities and M-vehicle priorities with all-red intervals unable to release all vehicles,and longer all-red intervals ensuring release all vehicles.Marginal delays caused by two illegal behaviors that occasionally happened in mixed traffic intersections were also investigated.It is concluded that increasing the speed of M-vehicles leaving intersections and postponing the entering of NM-vehicles are the keys in mathematics,although they are uneasy in disordered mixed traffic intersections due to a dilemma between efficiency and orders in reality.The results could provide implications for the traffic management in the cities maintaining a large number of M-and NM-vehicles. 相似文献
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针对标准人工蜂群算法收敛速度慢和易陷入早熟收敛等问题,提出一种快速收敛人工蜂群算法。首先借助反向学习理论初始化种群来提高初始解的分布质量,并在雇佣蜂和跟随蜂阶段引入向量整体扰动搜索方程加快局部搜索;然后为了跳出局部最优,采用一种随机更新搜索策略来增加蜂群多样性以平衡全局探索和局部利用能力;最后通过八个标准测试函数的仿真实验,发现所提出的算法与几个改进的人工蜂群算法相比,具有更快的收敛速度且获得了更高的求解精度,验证了算法的优越性。 相似文献
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以路网所能传输的最大流为衡量指标提出了一种协调方法并设计了相应的试验.首先利用各类试验中网络最大流的突变情况确定了协调的边界,然后给出了调整控制策略、诱导策略或协调策略等多种协调方案,并提出了协调效果的评价准则,最后针对一个算例进行了4类相应的仿真试验,通过对试验结果的分析验证了协调的必要性和所提方案的有效性. 相似文献
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本文提出了关于天津市公路立交桥选址问题的0-1规划模型。该模型以平均车速和对路网交通均衡的作用为目标函数,考虑了立交桥选址的各项约束条件考虑由计算机实现隐枚举法求解。在解的过程中该规划模型与交通流量分配模型不断相互作用。 相似文献
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