The invention provides a method for calculating the traffic capacity of a left-turn lane under a left-turn allowable phase. The method comprises the following steps of: step 1, collecting basic data;2, calculating the maximum passing vehicle number GpL (pcu) of a left-turn release unit of an intersection; 3, calculating the time t1 (s) of a green light initial stage; 4, calculating the time t2 (s) of a non-green-light initial stage; 5, calculating the traffic capacity CAP1 (pcu/h) of a left-turn lane at the green light initial stage; 6, calculating the traffic capacity CAP2 (pcu/h) of the left-turn lane in the non-green-light initial stage; and step 7, calculating the sum CAPL (pcu/h) of the traffic capacity of the left-turn lane in a whole signal period. According to the method, the mutual influence between left-turn traffic flow and opposite traffic flow under the left-turn allowable phase is considered, so that the traffic capacity of left-turn vehicles at the intersection of the left-turn allowable phase can be calculated more accurately; and domestic data are adopted in a modeling process, so that the method is more suitable for the actual situation of a 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Gp(pcu);步骤3:计算绿灯初期阶段时间t(s);步骤4:计算非绿灯初期阶段时间t(s);步骤5:计算绿灯初期左转车道的通行能力CAP(pcu/h);步骤6:计算非绿灯初期阶段左转车道的通行能力CAP(pcu/h);步骤7:计算整个信号周期左转车道通行能力之和CAP(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。
Method for calculating traffic capacity of left-turn lane under left-turn allowable phase
一种计算左转许可相位下左转车道通行能力的方法
2020-05-12
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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