双车道公路典型减速设施安全评价

Safety evaluation on speed reduction treatments of two-lane road

为有效降低车速、减少双车道公路交通事故的发生,选取"5+7"型、"10+10+10"型、"10+8+6+4+2"型减速标线、橡胶减速垄、比利时路面等典型减速设施和典型路段进行了减速效能试验与分析;利用统计分析方法研究了经过减速设施后车辆运行速度的变化特征,并基于运行速度的连续性,给出了长直线路段减速设施的设置位置。研究结果表明:橡胶减速垄和比利时路面的减速效果明显,但运行速度变化剧烈,对行车舒适性影响较大;减速标线对小车效果明显,随着减速标线组数和条数的增多,减速效果更为明显。研究结果为合理地选择双车道公路减速设施及确定其具体设置参数提供了理论依据。

In order to reduce speed of vehicle and the traffic accident of two-lane road,typical speed reduction treatments,such as ＂5＋7＂strips,＂10＋10＋10＂strips,＂10＋8＋6＋4＋2＂strips and rubber speed humps,and typical road sections,such as Belgian block pavement were selected to conduct on experiment on reduction efficiency.By using statistical analysis method,the characteristics of operating speed before and after speed reduction treatments were studied.Based on the continuity of operating speed,site of speed reduction treatments on long straight sections was discussed.The results show that rubber speed humps and Belgian block pavement can effectively reduce the speed,but the drastic change of the operating speed has a great influence on the driving comfort.The rumble strips can effectively reduce the speed of cars and with more groups and numbers of rumble strips,the effect is more obvious.The results can provide theoretical basis for the reasonable selection of speed reduction treatments and determination of specific parameters of two-lane road.