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摘要: 在设计的暗室中测得42名被试人在不同明暗转换次数下的暗反应时间,研究了明暗转换次数、隧道类型与连接段类型影响下的驾驶人暗反应时间变化;利用重复测量的一般线性与线性混合模型,分析了不同影响因素下的驾驶人暗反应时间;基于隧道类型和连接段类型对驾驶人暗反应时间变化速率的影响,研究了明暗转换次数、隧道类型与连接段类型对驾驶人暗反应时间的交互影响,建立了明暗转换次数、隧道类型与连接段类型的混合线性模型。研究结果表明:驾驶人暗反应时间随明暗转换次数的增加而减少,在经历3次明暗转换后达到最小值并趋于稳定;明暗转换次数、隧道类型与连接段类型对驾驶人暗反应时间交互影响显著,随明暗转换次数的增加,隧道长度与驾驶人暗反应时间的减少速率呈正相关,连接段长度与驾驶人暗反应时间的减少速率呈负相关;明暗转换次数越多,连接段长度越短,驾驶人黑暗辨识错误率越高; 明暗转换次数越多,连接段长度越短,隧道长度越长,驾驶人暗反应时间越短,越有利于交通安全,但频繁的明暗转换与极短的连接段会降低驾驶人的累计黑暗辨识正确率,存在安全隐患。Abstract: The dark reaction time of 42 subjects with light-dark conversion times was measured in the designed darkroom, and the variations of dark reaction time of drivers under the influencing factors such as light-dark conversion times, tunnel type, and connecting-section type were researched. Dark reaction time of drivers with various influencing factors was analyzed by using the generalized linear and linear mixed models through repeated measurements. The interactive effects of light-dark conversion times, tunnel type, and connecting-section type on dark reaction timed of drivers were studied based on the influences of tunnel and connecting-section types on the variation rate of dark reaction time of drivers. A linear mixed model of light-dark conversion times, tunnel type, and connecting-section type was established. Analysis results show that dark reaction time of drivers decreases significantly with the increase of light-dark conversion times, reaches the minimum value and tends to become stable after three light-dark conversions. Light-dark conversion times, tunnel type, and connecting-section type have significant interactive effect on dark reaction time of drivers. As the number of light-dark conversion increases, tunnel length and connecting section are positively and negatively correlated with the reduction rate of dark reaction time, respectively. The more the light-dark conversion times and shorter connecting section length, the higher the error rate of driver recognition in darkness. The more the light-dark conversion times, shorter connecting section length, and longer tunnel length, the shorter the dark reaction time of drivers, which is more conducive to traffic safety. However, frequent light-dark conversion and extremely short connecting section reduce the driver cumulative recognition accuracy in darkness, which poses a safety hazard. 6 tabs, 5 figs, 31 refs.
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Key words:
- traffic safety /
- tunnel group /
- dark reaction time /
- experiment simulation /
- linear mixed model
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表 1 被试人信息
Table 1. Information of subjects
年龄 驾龄 驾驶里程/104 km 均值 标准差 均值 标准差 均值 标准差 27.4 11.3 4.8 5.2 5.6 11.2 表 2 被试人暗反应时间
Table 2. Dark reaction times of subjects
s 明暗转换次数 短隧道 中隧道 长隧道 特长隧道 毗邻隧道 连续隧道 极限连续隧道 毗邻隧道 连续隧道 极限连续隧道 毗邻隧道 连续隧道 极限连续隧道 毗邻隧道 连续隧道 极限连续隧道 1 5.73 5.75 5.71 5.74 5.79 5.67 5.91 5.58 5.74 5.81 5.94 5.66 2 5.02 5.21 5.46 3.97 4.18 4.31 2.74 3.11 3.89 1.74 2.94 3.76 3 3.21 3.89 4.12 2.26 2.96 3.31 1.83 1.94 3.22 1.66 1.66 2.41 4 2.42 2.21 2.74 1.62 1.99 2.22 1.59 1.67 2.07 1.59 1.63 1.65 5 2.33 2.19 2.18 1.71 1.59 1.64 1.59 1.57 1.68 1.57 1.57 1.55 6 2.39 2.22 2.10 1.60 1.61 1.60 1.67 1.64 1.70 1.63 1.55 1.67 7 2.31 2.17 2.22 1.59 1.72 1.57 1.64 1.66 1.72 1.54 1.49 1.62 8 2.37 2.24 2.17 1.64 1.55 1.66 1.66 1.59 1.66 1.62 1.56 1.68 表 3 被试人黑暗辨识错误次数
Table 3. Numbers of dark identification errors of subjects
试验条件 明暗转换次数 连接段类型 1 2 3 4 5 6 7 8 毗邻隧道 连续隧道 极限连续隧道 错误次数 6 11 28 22 25 12 15 13 88 24 20 表 4 不同明暗转换次数下被试人黑暗辨识结果
Table 4. Dark identification result of subjects under different light-dark conversion times
试验条件 明暗转换次数 1 2 3 4 5 6 7 8 正确次数 190 375 543 717 784 1 072 1 253 1 436 检测次数 196 392 588 784 980 1 176 1 372 1 568 表 5 不同明暗转换次数下驾驶人暗反应时间模型
Table 5. Model of driver dark reaction time under different light and dark conversion times
变量系数 描述 自变量 隧道类型 短隧道系数xd 短隧道分类变量取1,否则取0 中隧道系数xz 中隧道分类变量取1,否则取0 长隧道系数xc 长隧道分类变量取1,否则取0 特长隧道系数xt 特长隧道分类变量取1,否则取0 连接段 毗邻隧道连接段系数xp 毗邻隧道分类变量取1,否则取0 连续隧道连接段系数xl 连续隧道分类变量取1,否则取0 极限连续隧道连接段系数xlim 极限连续隧道分类变量取1,否则取0 明暗转换次数 明暗转换次数为0~7的系数xt0~xt7 分类变量 因变量 暗反应时间t 连续变量 表 6 驾驶人暗反应时间线性混合模型
Table 6. Linear mixed model of dark reaction time of driver
参数 固定因素 系数 标准误差 自由度 t统计量 p 截距 1.57 0.25 34.2 6.181 0.00 短隧道类型 0.97 0.17 21.0 5.640 0.00 中隧道类型 0.34 0.23 21.0 2.000 0.02 长隧道类型 0.21 0.31 21.0 0.910 0.04 毗邻隧道连接段 -0.27 0.18 14.0 -2.260 0.00 连续隧道连接段 -0.19 0.27 14.0 -1.570 0.03 0次明暗转换 3.97 0.31 34.0 12.750 0.00 1次明暗转换 2.08 0.27 34.0 6.680 0.00 2次明暗转换 0.92 0.24 34.0 2.960 0.02 3次明暗转换 0.37 0.19 34.0 1.537 0.04 -
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