基于车速离散度的机场高速公路风险识别研究

Research on Airport Highway Risk Identification Based on Vehicle Speed Dispersion

为提高机场高速公路的行车安全,基于行车特征数据,建立机场高速公路运行风险区间的风险概率以及风险系数模型。研究结果表明:机场高速公路与普通高速公路存在较大差异,主要体现在车辆去机场的速度明显高于车辆驶离机场的速度,表明机场高速公路车辆行驶的目的性更显著;根据风险系数模型计算可知,机场高速公路高风险交织区为加减速路段,低风险交织区位于机场高速公路中间路段。研究结果为改善机场高速公路安全设施布设及车辆控制策略提供理论基础。

In order to improve the traffic safety of the airport expressway,based on the traffic characteristic data,the risk probability and risk coefficient model of the airport highway operation risk interval are established.The research results show that there is a big difference between the airport expressway and the ordinary expressway,which is mainly reflected in the fact that the speed of the vehicle going to the airport is significantly higher than the speed at which the vehicle leaves the airport,indicating that the purpose of the airport expressway vehicle is more significant;According to the calculation of the risk coefficient model,the high-risk interweaving area of the airport expressway is the acceleration/deceleration section,and the low-risk interweaving area is located in the middle section of the airport expressway.The research results provide a theoretical basis for improving the layout of highway safety facilities and vehicle control strategies.