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为了分析不同情况下得到时间占有率对推算延误的敏感性,首先对前期研究的使用占有率推算信号交叉口引道延误的方法进行了回顾,考虑实际检测器设置场景,对不同比例的公交混合率,不同的检测器设置密度等情况,借助于微观交通仿真场景,对信号交叉口延误参数提取敏感性进行了分析,结果表明:公交比例为10%,15%,20%时,参数提取误差分别为20.84%,30.17%和22.91%;同样,检测器设置间隔为10米时,参数提取误差为17.38%,三组检测器时,参数提取的误差为32.15%,两组检测器设置时,参数提取的误差为23.77%,说明检测器设置间隔比公交车混合率对参数提取的精度影响大.
In order to analyze the sensitivity of the time share to the estimation delay in different situations, the method of estimating the delay of the signalized intersection at the early stage of the study is firstly reviewed. Considering the actual detector setting scenario, different proportions of bus hybrid Rate and different detector density, the sensitivity of delay extraction at signalized intersection was analyzed with the help of the micro-traffic simulation scene. The results show that when the bus proportion is 10%, 15%, 20%, the parameter extraction error Respectively, 20.84%, 30.17% and 22.91% respectively. Similarly, the error of parameter extraction is 17.38% when the detector setting interval is 10 meters, and the error of parameter extraction is 32.15% when the three sets of detectors are set. When the two sets of detectors are set, The error of parameter extraction is 23.77%, which shows that the interval of detector setting has a greater influence on the accuracy of parameter extraction than the bus mixing rate.