%0 Journal Article
%T 信号交叉口左弯待转区对左转车道通行能力的影响<br>Impact of left-turn waiting areas on the capacity of left-turn lane in signalized intersection
%A 陈亦新
%A 贺玉龙
%A 孙小端
%A 马小龙
%J 长安大学学报(自然科学版)
%D 2015
%X 左弯待转区的设置可提高信号交叉口左转车道的通行能力。以实际的左弯待转区左转车道车流调查数据及无左弯待转区左转车道的通行能力计算公式为基础，通过提取左弯待转区左转车道排队车辆从起步到驶离交叉口的加速度、速度及位移特征规律，建立了左弯待转区左转车道实际通行能力的计算方法，并进行了实例验证计算。研究结果表明：左转相位绿灯亮起后，静止时排队的车辆逐次起步，车辆加速度随时间呈起伏式线性变化；左弯待转区可较显著地提高左转车道的实际通行能力，所提高比例与左转相位配时及左弯待转区长度有关；所调查的信号交叉口左弯待转区的设置提高了左转车道通行能力10%~20%。<br>Left-turn waiting areas can increase the capacity of the left-turn lane in signalized intersection. Firstly, based on the investigation data of the vehicles of the left-turn with waiting area in signalized intersection, this paper analyzed their characteristics of the acceleration, speed, and distance from the start to leave the intersection. Then, it established an approach which can calculate the capacity of the left turn lane with waiting area based on the formula of left-turn lane without waiting area and carried out example verification. The results show that the vehicles start successively after the left-turn phase turning green, and its acceleration has a undulant linear relationship with time. Also, the waiting area of the left-turn lane can improve the actual capacity significantly, the signal phase and the length of the waiting area affect the proportion, and the waiting area of the left-turn lane improved the capacity by 10%~20% in the surveyed signalized intersection
%K 交通工程
%K 信号交叉口
%K 左弯待转区
%K 左转车道
%K 通行能力&lt
%K br&gt
%K traffic engineering
%K signalized intersection
%K left-turn waiting area
%K left-turn lane
%K capacity
%U http://zzszrb.chd.edu.cn/oa/DArticle.aspx?type=view&id=20150616