高速公路作业区汇入提示标志设置研究

发布时间：2018-05-04 07:42

本文选题：高速公路 + 作业区　；参考：《公路工程》2014年04期

【摘要】：考虑驾驶员在作业区上游过渡车道上行驶的过程中,车辆可汇入相邻车道的临界间隙的变化情况,减少作业区警告区末端由于汇入产生的冲突,提出设置汇入提示标志。利用M3分布模型与间隙接受理论,通过微分方法得到次车道上车辆的汇入概率模型。利用该概率模型,得到了在不同交通流状态下的汇入提示标志设置距离,同时对影响汇入概率的交通流参数进行了分析。计算结果表明:当自由流比例及车速均相同时,设置距离随交通流量增大而增大;而当车速与交通流量均相同时,设置距离随自由流比例增大而减小;当自由流比例与交通流量均相同时,设置距离随车速增大而增大。因此应结合作业区的限速值进行汇入提示标志的设置。
[Abstract]:Considering the change of the critical clearance between the adjacent lanes during the driver's driving in the upstream transition lane of the operation area, the conflicts at the end of the warning area of the operation area are reduced, and the sign of the transfer warning is put forward. By using the M3 distribution model and the gap acceptance theory, the probability model of the confluence of vehicles in the secondary lane is obtained by differential method. By using the probability model, the setting distance of the import sign under different traffic flow conditions is obtained, and the traffic flow parameters which affect the inflow probability are analyzed. The calculation results show that the setting distance increases with the increase of the traffic flow when the free flow ratio and the speed are homogeneous, while the setting distance decreases with the increase of the free flow ratio at the same time of the speed and the traffic flow. When the free flow ratio is equal to the traffic flow, the setting distance increases with the increase of the speed. Therefore, we should combine the speed limit of the operation area to set the import sign.
【作者单位】：同济大学道路与交通工程教育部重点实验室;云南省公路开发投资有限责任公司;湖南省交通科学研究院;
【基金】：云南省交通科技项目(1402012Y0004) 西部交通建设科技项目(2009318785009)
【分类号】：U417

【相似文献】