遠引調(diào)頭對下游交叉口通行能力的影響
發(fā)布時間:2018-08-05 19:00
【摘要】:為了準確分析在主干路上設置中央隔離欄以后,支路原有直接左轉(zhuǎn)的車輛對下游交叉口的影響,以交通流理論為基礎,以交叉口通行能力為評價指標,建立了車頭時距與通行能力之間的關系模型。研究結(jié)果表明:對于信號交叉口,當調(diào)頭流量的百分比為21%,調(diào)頭車輛的修正系數(shù)為0.95,即左轉(zhuǎn)專用車道的通行能力降低了5%時,盡管交叉口通行能力有所降低,但是遠引調(diào)頭的運行效率將比直接左轉(zhuǎn)的高,此時設置中央隔離欄對提高主干路交通運行效率具有積極意義;對于無信號控制交叉口,在主干路流量小于850 pcu/h時,不同主干路車頭時距對應的支路的通行能力比較接近,當主干路流量大于1 250 pcu/h時,不同的主干路車頭時距對應的支路的通行能力差異較大,即不同的主干路車頭時距對支路的通行能影響較大。
[Abstract]:In order to accurately analyze the influence of the original left turning vehicle on the downstream intersection after the main road is set up on the main road, based on the traffic flow theory and the traffic capacity of the intersection as the evaluation index, the relationship model between the head time distance and the capacity is established. The percentage of the flow rate is 21%, the correction coefficient of the turning vehicle is 0.95, that is, the capacity of the left turn special lane is reduced by 5%, although the capacity of the intersection is reduced, but the operation efficiency of the far diversion will be higher than that of the direct left turn. Without signal control intersection, when the main road flow is less than 850 pcu/h, the traffic capacity of the corresponding branch road is close to the corresponding branch road. When the main road flow is more than 1250 pcu/h, the traffic capacity of the different main road headway is different from the corresponding branch road, that is, the capacity of the different main trunk road distance to the branch road is different. It has great influence.
【作者單位】: 昆明理工大學云南省高校智能交通系統(tǒng)工程研究中心;昆明理工大學交通工程學院;玉溪市公安局交通警察支隊;
【基金】:國家自然科學基金項目(61364019)
【分類號】:U491.23
[Abstract]:In order to accurately analyze the influence of the original left turning vehicle on the downstream intersection after the main road is set up on the main road, based on the traffic flow theory and the traffic capacity of the intersection as the evaluation index, the relationship model between the head time distance and the capacity is established. The percentage of the flow rate is 21%, the correction coefficient of the turning vehicle is 0.95, that is, the capacity of the left turn special lane is reduced by 5%, although the capacity of the intersection is reduced, but the operation efficiency of the far diversion will be higher than that of the direct left turn. Without signal control intersection, when the main road flow is less than 850 pcu/h, the traffic capacity of the corresponding branch road is close to the corresponding branch road. When the main road flow is more than 1250 pcu/h, the traffic capacity of the different main road headway is different from the corresponding branch road, that is, the capacity of the different main trunk road distance to the branch road is different. It has great influence.
【作者單位】: 昆明理工大學云南省高校智能交通系統(tǒng)工程研究中心;昆明理工大學交通工程學院;玉溪市公安局交通警察支隊;
【基金】:國家自然科學基金項目(61364019)
【分類號】:U491.23
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