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Threshold Visibility Levels Required for Nighttime Pedestrian Defection in a modified Adrian/CIE Visibility Model

机译:在改进的Adrian / CIE可见性模型中夜间行人叛逃所需的阈值可见性级别

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Adrian's Visibility Model is a useful tool for assessing the visibility of an object at night. However, it was developed using test data under laboratory conditions. Thus, it is necessary to determine the visibility levels which are required for target detection under nighttime driving conditions. The author has previously presented a study in which experimental data from Olson and others were applied to the Adrian Visibility Model to determine visibility levels at target detection for alerted and unalerted drivers. However, a limitation in the model's handling of glare (valid for 1.5° to 30°) limited the useable data. A modified Visibility Model is proposed which incorporates the CIE General Disability Glare Equation. This widens the available glare range to 0.1° to 100° and allows for a more robust analysis than had been presented previously. Age, headlight beam pattern, and target reflectivity were all found to have a significant effect on visibility level at target detection for alerted drivers. Target size and position did not significantly affect visibility level at target detection. Average threshold visibility levels between 0.1 and 18 were calculated for alerted drivers. For unalerted drivers, average threshold visibility levels between 14 and 89 were calculated.
机译:Adrian的可见性模型是评估夜间物体可见性的有用工具。但是,它是使用实验室条件下的测试数据开发的。因此,有必要确定夜间驾驶条件下目标检测所需的可见度水平。作者之前曾提出过一项研究,其中将来自Olson和其他人的实验数据应用于Adrian可见性模型,以确定目标检测中警惕和未变驾驶员的可见度。但是,模型处理眩光的限制(适用于1.5°至30°)限制了可用数据。提出了一种改进的能见度模型,其中包含了CIE通用残疾眩光方程。这将可用的眩光范围扩大到0.1°至100°,并允许进行比以前介绍的功能更强大的分析。发现年龄,前照灯光束方向图和目标反射率都对警觉目标进行目标检测时的可见度水平有重要影响。目标大小和位置在目标检测时不会明显影响可见度。计算警报驾驶员的平均可见性阈值级别在0.1和18之间。对于未更改的驾驶员,计算得出的平均阈值可见性级别在14到89之间。

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