Abstract
In order to study the gaze behavior characteristics of drivers in mountainous road sections with limited sight distance, the real vehicle test is carried out by using Smart Eye Pro 5.7 noninvasive eye tracker. Combined with the sight distance change rate theory, 6 typical test representative mountainous sections are selected to study the gaze distribution law and gaze duration of drivers in different mountainous sections. The research shows that when the driver drives on the test section with the most unfavorable sight distance of 44 m, 50 m, and 56 m, the fixation characteristics of “from far to near” are significant, and the long fixation duration accounts for a large proportion of the driver. When the driver drives on the section with the most unfavorable sight distance of more than 70 m, i.e., the sight distance change rate of less than 1.33, the fixation characteristics of “from far to near” disappear. The driver’s fixation stability increases, the fixation freedom increases, and the proportion of medium and long fixation duration decreases. The data analysis provides a theoretical basis for drivers to pass safely in mountainous sections.
Highlights
Sight distance is a necessary basis to ensure driving safety
Ibrahim et al [12] found that the occurrence of adverse combination of alignment will greatly improve the incidence of traffic accidents, among which the adverse combination of horizontal and vertical curves with small radius has the greatest impact; At present, the research status at home and abroad mainly focuses on the calculation method of highway sight distance and the impact of horizontal curve design elements on highway safety in mountainous areas. e research on drivers’ eye movement characteristics mainly focuses on intersections, urban sections, and urban roads
Ere is less research on drivers’ gaze characteristics with limited sight distance in mountainous roads, erefore, this study intends to carry out real vehicle eye movement test on the road section with limited sight distance in mountainous areas and study the driver’s gaze characteristics in the road section, so as to provide theoretical reference for the road element design and the setting of traffic safety facilities in the road section with limited sight distance in mountainous areas
Summary
Sight distance is a necessary basis to ensure driving safety. In mountainous areas, due to poor linear balance and vegetation influence, the incidence of sight distance limited sections is high. Ibrahim et al [12] found that the occurrence of adverse combination of alignment will greatly improve the incidence of traffic accidents, among which the adverse combination of horizontal and vertical curves with small radius has the greatest impact; At present, the research status at home and abroad mainly focuses on the calculation method of highway sight distance and the impact of horizontal curve design elements on highway safety in mountainous areas. Ere is less research on drivers’ gaze characteristics with limited sight distance in mountainous roads, erefore, this study intends to carry out real vehicle eye movement test on the road section with limited sight distance in mountainous areas and study the driver’s gaze characteristics, so as to provide theoretical reference for the road element design and the setting of traffic safety facilities in the road section with limited sight distance in mountainous areas.
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