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停车让行交叉口机动车接受间隙和拒绝间隙分布特征

, PP. 86-93

Keywords: 交通工程,临界间隙,Raff方法,停车让行交叉口,分布特征

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Abstract:

?为了给出停车让行交叉口机动车的临界间隙值,调查了上海市不同区域(中心区、郊区等)和不同类型(十字形、T形)的14个交叉口,提取各交叉口不同流向(主路左转、支路直行、支路左转)交通流之间的穿越行为特征数据。基于Raff方法和极大似然估计法,对接受间隙和拒绝间隙数据进行统计分析,从而获得了不同类型交叉口不同流向的临界间隙值,将实测值与HCM2010中的推荐值进行比较。统计分析结果表明:T形交叉口和十字形交叉口的接受间隙和拒绝间隙明显不同,其中342型交叉口各流向的接受间隙和拒绝间隙值明显大于322型交叉口各流向的接受间隙和拒绝间隙值;支路左转车流的实测值大于HCM2010的推荐值,而其他流向的实测值均小于HCM2010推荐值;不同区域的交叉口各流向临界间隙值不同,越靠近外环,机动车临界间隙越大。

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