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某互通立交为G324与某新建高速公路连接的一般互通,采用左侧进出匝道的方式,占用G324广州方向内侧车道,压缩原有道路断面。该方案决策需分析立交匝道设置对G324通行能力的影响。基于近10年的路段断面当量交通量数据,利用二次移动平均法预测目标年交通量,分析该路段通行能力及服务水平,结果表明在目标年内该路段通行能力及服务水平等级基本符合要求。为提高“左进左出”路段通行能力和安全水平,提出了相应的交通安全改善措施。
An interworking interchange is a general interworking between G324 and a new expressway. The approach on the left side of the ramp is used to occupy the inside lane of the G324 direction of Guangzhou and compress the original road section. The decision-making of the program needs to analyze the influence of the on-ramp setting on the capacity of G324. Based on the equivalent traffic data of the cross-section of nearly 10 years, the quadratic moving average method is used to predict the traffic volume of the target year. The traffic capacity and service level of the road section are analyzed. The results show that the traffic capacity and service level basically meet the requirements in the target year. In order to improve the traffic capacity and safety level of the “left-leftward-rightward” section, the corresponding traffic safety improvement measures are put forward.