车道限制策略下八车道高速公路交通流特征

发布时间：2018-03-29 19:17

本文选题：交通工程　切入点：交通流　出处：《公路交通科技》2014年04期

【摘要】：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。
[Abstract]:In order to grasp the effect of lane restriction strategy, the characteristics of three traffic flow parameters, such as traffic volume, speed and headway time, are analyzed by using the measured data of off-peak and peak periods of an eight-lane expressway. It is concluded that the traffic volume of lane 1 / 2 is larger and the speed is higher than that of lane 3 / 4, which indicates that the restriction of freight car has obvious effect on improving the service level of the carriageway. The fitting effect of front time distance of lane 1 / 2 with M3 distribution is better. Lane 3 / 4 fits well with the second order Allan distribution or shift negative exponential distribution, which shows that the former is easy to form a motorcade, while the latter has a relatively large degree of freedom, and there is still room for improvement in traffic volume. In essence, lane restriction strategy is to manage the lane differentiation. The main goal of the lane restriction strategy is to improve the service level and the traffic capacity, respectively, in order to optimize the overall running quality. However, the implementation conditions and safeguards are still to be explored.
【作者单位】：东南大学交通学院;华中科技大学土木工程与力学学院;
【基金】：国家自然科学基金项目(51208222) 江苏省交通科学研究计划项目(2011-Y-30)
【分类号】：U491.112

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