To study the visual behavior characteristics of drivers in the lane-widening construction zone on highways,eye trackers,head-up displays(HUD),and other devices are used to collect visual parameters of drivers passing through regular road segments and lane-widening construction zones in real vehicle tests.Statistical analysis is conducted on the average pupil diameter change rate,duration of single gaze,and gaze area in the test segments.Regression analysis curve fitting and sudden change theory are used to determine the risk threshold values of the average pupil diameter change rate and gaze duration.Using the K-means clustering algorithm,the gaze areas are classified into left side of the road,near right side,far right side,and road ahead.The results show that in the lane-widening construction zone,the average pupil diameter change rate of drivers follows a U-shaped distribution.When drivers see speed limit signs,the average pupil diameter change rate exceeds the risk threshold value,and then gradually decreases to 0.13.Upon entering the upstream transition zone,buffer zone,and work zone,the average pupil diameter change rate increases and remains at a relatively high level of about 0.24.The impact range of the lane-widening construction zone is from 184.27 m before the warning area to 69.98 m after the termination zone.After entering the work zone,the overall gaze area skews to the right,and the gaze area trend shifts from far to near and back to far.The placement of speed limit signs in the warning area and traffic safety facilities in the upstream transition zone of the lane-widening construction zone have a significant impact on drivers.
关键词
视觉行为/平均瞳孔直径变化率/注视持续时间/注视区域/施工路段
Key words
visual behavior characteristics/average pupil diameter change rate/duration of single gaze/gaze area/construction section
维普
万方数据