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城市道路人行横道处照明指标的确定

, PP. 1308-1314

Keywords: 交通运输工程,驾驶人,过街行人,视认距离,平均照度

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Abstract:

为了合理确定城市道路人行横道处的照明指标,保证驾驶人对过街行人的有效视认,进行了驾驶人夜间视认距离试验研究。分析了过街行人数量、状态(静止或运动)及衣服颜色对驾驶人夜间识别距离的影响,以及不同车速条件下驾驶人夜间视认距离随平均照度的变化规律,构建了驾驶人夜间视认距离-平均照度-车速关系模型。基于驾驶人夜间视认距离与反应制动距离间的安全行驶判别条件,提出了城市道路人行横道处平均照度的计算方法,并给出了实际案例。研究结果表明:当单个过街行人静止且衣服颜色较深时,驾驶人夜间对其进行视认最为困难;驾驶人夜间视认距离与平均照度呈正对数相关,与行驶速度呈负线性相关。

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