山地城市隧道照度与速度对驾驶负荷的影响

Effect of Light and Velocity on Driver Workload in Mountain City Tunnel

为研究山地城市隧道段驾驶员生理特征及驾驶负荷变化规律,在4条城市隧道开展了小客车分段实车试验,采集真实城市交通状态下的驾驶员心电信号(ECG)、车辆速度和隧道照度参数。基于实测数据,分析隧道照度和行驶速度对驾驶员心率增长率的影响规律,探讨隧道照度、行驶速度与心率增长率之间的关系,并建立其回归模型。研究结果表明:在隧道进口段,照度与心率增长率H之间存在较强的负相关性,并且随着速度的增大,H对照度变化的敏感性增加;在隧道中段,由于照度幅值的变化小,照度与H的关系较离散;在隧道出口段,照度与H之间存在较强的正相关性,速度与H之间存在一定的正相关性。

To study the change in driver workload and driver physiology characteristics in mountain city tunnel,the vehicle driving test on four mountainous city tunnels were carried out,and driver electrocardiogram(ECG),velocity of vehicle as well as light of tunnel under naturalistic urban traffic condition were collected.The driver heart rate growth ( H ) affected by velocity and tunnel light was analyzed based on the measured data.The relationship among the tunnel light,vehicle velocity and H was confirmed,and the regression model of these parameters was established.The results show that a strong negative correlation between tunnel light and H in the entrance section of tunnel,and with the increase of the velocity, H is more sensitive to the changes in the tunnel light;Because the change of light value is small,the relationship between light and H is discrete in the middle section of tunnel;There is a strong correlation between light and H ,and a positive correlation between velocity and H exists in the exit section of the tunnel.