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为研究城市道路不同路段类型对驾驶人工作负荷的影响,招募了16名被试驾驶人,在选定的城市道路试验路线上,开展了实车试验。以心率增长率(GRHR)、心率变异性(HRV)、心率变异性时域指标(RMSSD)和心率变异性频域指标(LF)值作为驾驶人工作负荷表征指标,分析在各种路段类型下被试驾驶人工作负荷的差异。研究结果表明:城市道路不同路段类型对驾驶人的工作负荷有显著的影响;驾驶人通过交叉口时的工作负荷明显高于在非交叉口路段的工作负荷;通过平面交叉口时,左转的工作负荷高于右转和直行;通过立交桥时,在匝道上的工作负荷高于上跨及下穿立交桥时的工作负荷;车速对驾驶人的工作负荷也有较大影响,工作负荷随车辆行驶速度的提高而增加。研究结果可以为道路线形设计提供理论依据。
In order to study the impact of different road sections of urban roads on the workload of drivers, 16 test drivers were recruited to conduct actual vehicle tests on selected urban road test routes. The heart rate growth rate (GRHR), heart rate variability (HRV), heart rate variability time domain index (RMSSD) and heart rate variability frequency domain index (LF) values were used as driver workload indicators. The difference between the test driver workload. The results show that: the different road sections of urban roads have a significant impact on the workload of drivers; the workload of drivers when crossing the intersections is significantly higher than that of the non-intersections; when passing through the intersections, The work load is higher than the right turn and straight ahead; when passing the overpass, the work load on the ramp is higher than the work load on the overpass and underpass. The vehicle speed also has a greater impact on the workload of the driver. The work load varies with the vehicle running speed Increase and increase. The research results can provide a theoretical basis for the road linear design.