The invention provides a method for calculating the traffic capacity of a left-turn lane under a left-turn permission phase. The method comprises the following steps: step 1, acquiring basic data; step 2, calculating the maximum passing vehicle number GpL (pcuu) of a left turn release unit of the intersection; step 3, calculating the time t1 (s) at the initial stage of the green light; step 4, calculating non-green-light initial stage time t2 (s); step 5, calculating the traffic capacity CAP1 (pcu/h) of the left turn lane at the initial stage of the green light; step 6, calculating the traffic capacity CAP2 (pcu/h) of the left turn lane at the non-green-light initial stage; and step 7, calculating the traffic capacity sum CAPL (pcu/h) of the left turn lanes in the whole signal period. According to the method, the mutual influence between the left-turn traffic flow and the opposite traffic flow under the left-turn permissible phase is considered, the traffic capacity of the left-turn vehicles at the intersection of the left-turn permissible phase can be calculated more accurately, domestic data are adopted in the modeling process, and the method is more in line with the actual situation of the domestic intersection.

    本发明提出了一种计算左转许可相位下左转车道通行能力的方法,包括以下步骤:步骤1:采集基础数据;步骤2:计算该交叉口的左转释放单元最大通过车辆数GpL(pcu);步骤3:计算绿灯初期阶段时间t1(s);步骤4:计算非绿灯初期阶段时间t2(s);步骤5:计算绿灯初期左转车道的通行能力CAP1(pcu/h);步骤6:计算非绿灯初期阶段左转车道的通行能力CAP2(pcu/h);步骤7:计算整个信号周期左转车道通行能力之和CAPL(pcu/h)。本发明考虑了左转许可相位下左转车流与对向车流之间的相互影响,可以更准确地对左转许可相位交叉口左转车通行能力进行计算,且其建模过程中采用了国内数据,更加贴合国内交叉口实际情况。


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    Title :

    Method for calculating traffic capacity of left-turn lane under left-turn permission phase


    Additional title:

    一种计算左转许可相位下左转车道通行能力的方法


    Contributors:
    BAI QIAOWEN (author) / QU ZHAOWEI (author) / XING YONGJIN (author) / CHEN YONGHENG (author) / MA YONGJIAN (author)

    Publication date :

    2022-01-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / G06Q Datenverarbeitungssysteme oder -verfahren, besonders angepasst an verwaltungstechnische, geschäftliche, finanzielle oder betriebswirtschaftliche Zwecke, sowie an geschäftsbezogene Überwachungs- oder Voraussagezwecke , DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES



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