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车道限制策略下八车道高速公路交通流特征

, PP. 125-129

Keywords: 交通工程,交通流,数理统计,八车道高速公路,车道限制,差异化管理

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Abstract:

为掌握车道限制策略的实施效果,应用某八车道高速公路非高峰期和高峰期的实测数据,对交通量、速度和车头时距等3项交通流参数的特征进行分析,并得出结论。限制货车通行的车道1、2比不限货车的车道3、4交通量大且速度高,说明限制货车对于提高车道的服务水平有明显效果。车道1、2的车头时距用M3分布拟合效果较好,车道3、4用2阶爱尔朗分布或移位负指数分布拟合效果较好,说明前者易结成车队,而后者的行驶自由度相对较大,交通量仍有提升空间。综上所述,车道限制策略实质上是对车道进行差异化管理,限制货车和不限货车的车道分别以提高服务水平和通行能力作为首要目标,以期获得整体运行质量的优化,但实施条件和保障机制仍有待探索。

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