一种山区急弯路段驾驶人熟练度甄别方法

Discriminating Method of Driver Proficiency in Mountain Road with Sharp Curve

为探究驾驶人眼动行为与驾驶熟练程度以及道路线型之间的响应特性,设计并组织山区公路实车驾驶行为试验。招募20名驾驶人,实时采集被试驾驶人在急弯路段的6个注视及扫视行为表征参数。试验表明:眼睛注视点在左转急弯路段的水平方向分布范围是-0.5~0.1 m,在右转急弯路段的水平方向分布范围是-0.2~0.5 m;眼睛水平注视角变化的主要范围是0°~30°;扫视速度的变化范围区间是0~1(°)·ms^(-1),扫视幅度的变化范围是5°~25°。基于采集的眼动行为参数,构建驾驶人视觉搜索模态矩阵。采用主成分分析法对影响因子进行降维,并建立驾驶人眼动特征综合评价模型。结果显示,眼动综合评分与驾驶里程呈正相关关系,表明该模型可用于量化甄别驾驶人驾驶熟练程度,并为驾驶能力评估提供有效的理论依据。

In order to discuss the response characteristics of drivers eye movement behaviors between driving proficiency and mountain road,a real car driving behavior test was designed and organized.20 drivers were recruited to collect 6 parameters of eye movement parameters in sharp turn,including gaze behavior and glance behavior.The experiment shows that the eye fixation points are-0.5~0.1 m in the horizontal direction in the left turning roads and-0.2~0.5 m in the right turning roads,the main range of eye horizontal fixation angle is 0°~30°,the range of the eye saccade velocity range is 0°~1(°)·ms-1,the range of the saccade amplitude is 5°~25°.Based on collected eye movement parameters,drivers visual search modal matrix was built.Using principal component analysis was used to reduce the dimension,and a comprehensive evaluation model of driver s eye movement characteristics was established.The result shows that eye movement score and driving distance was positively correlated.It indicates that the model can be used to quantify and discriminate drivers driving proficiency,and provide an effective theoretical basis for driving ability assessment.