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在试验场的直线路段上模拟简单交通环境,将车速和标志文字高度作为控制变量,用眼动仪测录了7名受试驾驶人水平和垂直方向的视角与注视持续时间。用方差分析方法对试验数据进行分析,研究了车速与标志文字高度对驾驶人视觉搜索广度、注视持续行为及视角分布的影响。分析结果表明:车速及标志文字高度对驾驶人的视觉搜索广度的影响不显著,车速的F检验统计量为2.99,小于检验临界值3.55,各车速条件下,字高的F检验统计量也均小于检验临界值3.55;驾驶人的平均注视时间随车速及标志文字高度的变化不大,2种因素的F检验统计量分别为0.09和1.20,均小于检验临界值3.17;驾驶人对道路中心区域的注视频率最高,各条件下驾驶人注视道路中心区域的百分比均超过60%,尤其是较多地关注道路左侧区域及距车辆较近的区域;车速的提高使得驾驶人对远处区域的注视逐渐增多。
The simple traffic environment was simulated on the straight section of the test ground. The vehicle speed and sign height were used as control variables. The horizontal and vertical viewing angles and fixation durations of 7 test drivers were recorded by eye tracker. The test data were analyzed by analysis of variance (ANOVA), and the influence of vehicle speed and sign height on the driver’s visual search breadth, gaze continuous behavior and viewing angle distribution was studied. The results show that vehicle speed and sign height have no significant effect on the driver’s visual search breadth. The F-test statistic of vehicle speed is 2.99 and less than the test threshold of 3.55. The F-test statistic of word height Less than the critical value of 3.55; driver’s average fixation time with the vehicle speed and logo text height is not changed, the two test F statistic were 0.09 and 1.20, respectively, were less than the test threshold of 3.17; driver of the road center area With the highest frequency of fixation, with drivers accounting for more than 60% of all road center areas under each condition, with particular attention paid to the areas to the left of the road and the areas closer to the vehicle; Gazing gradually increased.