Impact of Non-driving Tasks on Drivers'Visual and Physiological Characteristics Under Take-over Scenario
To investigate the changes in drivers'visual and physiological characteristics during the process of take-over vehicle control,this paper analyzes six types of take-over scenarios for urban roads and highways conditions.The driving experiments were conducted and the parameters were extracted from various dimensions,such as visual features,electro cardio graphic features,and electro dermal activity features.The two-way ANOVA was used to identify the factors affecting drivers'state parameters.The results show that the type of take-over scenario and non-driving tasks significantly affect drivers'pupil area changing rate,fixation entropy,fixation probability in areas of interest,heart rate growth,heart rate variability,and electro dermal activity growth(p<0.05).In urban road conditions,the drivers'pupil area changing rate(M=26.91,SD=10.17)is higher than on highways(M=21.32,SD=7.69).The fixation entropy(M=3.84,SD=1.53)during cognitive distraction state is lower than in baseline state(M=4.46,SD=1.87),and there is a significant reduction in visual search range(p<0.05).Compared to baseline and cognitive distraction states,drivers'heart rate growth increased by 34.69%in composite distraction state,while heart rate variability is reduced by 10.55%.Additionally,in composite distraction state,drivers exhibit the highest electro dermal activity growth,surpassing the other two non-driving task by 82.43%.The research results provide important references for the evaluation and improvement of driver take-over performance and the optimization of human-computer interaction mode of automated driving.
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