Visual characteristics of drivers in widened construction sections of highway intersection areas
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.
visual behavior characteristicsaverage pupil diameter change rateduration of single gazegaze areaconstruction section
万方数据
维普
