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高速公路夜间最高车速限制研究

, PP. 147-153

Keywords: 交通工程,高速公路,速度感知试验,夜间最高限速,识别距离

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Abstract:

?为了合理确定高速公路夜间最高车速限制值,保障高速公路夜间行车安全,进行了驾驶人夜间距离识别与车速感知试验研究。分析了行驶速度、平曲线半径和纵坡坡度对高速公路驾驶人夜间识别距离与感知速度的量化影响,并建立了高速公路驾驶人夜间识别距离模型与感知速度模型。基于驾驶人夜间识别距离与反应制动距离间的安全行驶判别条件及驾驶人夜间感知速度模型,给出了高速公路夜间最高理论限速值与修正限速值的确定方法,并进行实际案例分析。研究结果表明:驾驶人夜间识别距离与行驶速度呈负线性相关,与平曲线半径呈正对数相关,与公路纵坡坡度呈负指数相关;驾驶人夜间感知速度与纵坡坡度无关,与实际行驶速度呈正线性相关,与平曲线半径呈负对数相关。

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