Effect of working memory capacity on lane-changing decisions under auditory-verbal cognitive load
With the continuous improvement of the research on the mechanisms of drivers'risky driving behaviors,drivers'cognitive differences have gradually become a hot and difficult area of current research.To investigate the relationship between working memory capacity,cognitive load,and novice drivers'lane change decisions,a complex span memory paradigm was used to measure drivers'working memory capacity,and a simulated driving scenario was constructed by combining no cognitive negative and cognitive load N-back(N=0,1,2)tasks with risky driving behavior characteristics.A lane change test under urban road scenarios was conducted on 54 subjects based on a driving simulator to collect psychological experiment data,vehicle operation state data,and driver operating behavior data,and the effects of working memory capacity,cognitive load,and high cognitive load at different groups of drivers with different working memory capacity on the decision-making stage of the lane-changing process was analyzed,respectively.The ANOVA results show that the standard deviation of lateral distance offset decreases with increasing the working memory capacity,and the decision time for lane change decreases with increasing the working memory capacity.Within the speed limit,with the increase of the cognitiveload,the longitudinal speed and the standard deviation of lateral acceleration increase,while the standard deviation of lateral distance offset and the decision time for lane change first decrease and then increase at 2-back.To understand the reasons for this trend in detail,the effects of working memory capacity on lateral control ability and lane change decision time were analyzed under 1-back and 2-back.It is concluded that there are significant differences in the standard deviation of lateral distance excursions and decision times of the driver population with different working memory capacities under 1-back.And under 2-back,drivers have exhausted their driving primary task and cognitive secondary task,resulting in the working memory capacity resources,resulting in adaptive adjustment or compensation behavior.
NETL
NSTL
万方数据
维普
