认知负荷对驾驶员识别行人意图的影响

The Effect of Cognitive Load on Driver's Recognition of Pedestrian Road-Crossing Intention

目的 准确识别行人意图对人车安全非常重要,但驾驶员在操作车辆时往往会面临一定的认知负荷.本研究考察认知负荷对驾驶员识别行人意图的影响.方法 通过听觉N-back任务操纵认知负荷,要求被试(N =90)在模拟驾驶场景中识别行人意图.结果 在2-back双任务的高负荷下,驾驶员识别行人意图的辨别力显著低于1-back双任务和单任务,且后两者没有差异.结论 增加认知负荷会削弱驾驶员识别行人意图的辨别力,提示对行人意图的识别需要认知资源的参与.因此,驾驶员应保持较低水平的认知负荷驾驶以提高人车交互安全.

Objective Accurately recognizing pedestrian intentions is very important to ensure the safety of drivers and pedestrians,but drivers are likely to withstand varying degrees of cognitive load when operating the vehicles.The study aim to investigate the effect of cognitive load on the drivers recognition of pedestrian intentions.Methods The study manipulated the cognitive load by the auditory N-back task,asking participants(N=90)to recognize pedestrian intentions in simulated driving scenarios.ResultsThe drivers'discrimination of pedestrian intentions under the high load of two-back dual task is significantly lower than that of one-back dual task and single task,additionally there exists no difference between the latter two.Conclusion The increasing cognitive load weaken the discrimination of identifying pedestrian intentions,suggesting that the involvement of cognitive resource is needed while recognizing pedestrian intentions.Accordingly,for the sake of improving driving safety,the drivers should keep their cognitive load as low as possible during driving.