基于自然间断点法的公交理想运送速度标定  

Calibration of Bus Free-flow Travelling SpeedBased on Natural Break Method

作　　者：李钰平 陈国俊[1] 苏婷[1] 刘好德[3] 孙宏飞 LI Yuping;CHEN Guojun;SU Ting;LIU Haode;SUN Hongfei(School of Transportation and Logistics Engineering,Wuhan University of Technology,Wuhan 430063,China;Xiangyang Demonstration Zone,Wuhan University of Technology,Xiangyang 431100,China;China Academy of Transportation Sciences,MOT,Beijing 100029,China;Hualu Zhida Technology Co.Ltd,Beijing 100043,China)

机构地区：[1]武汉理工大学交通与物流工程学院,武汉430063 [2]武汉理工大学襄阳示范区,襄阳441100 [3]交通运输部科学研究院,北京100029 [4]华录智达科技股份有限公司,北京100043

出　　处：《武汉理工大学学报（交通科学与工程版）》2023年第6期982-986,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金青年科学基金(71701159)。

摘　　要：文中提出了一种公交理想运送速度的标定方法,采用自然间断点法将升序排列的公交行程速度数据进行分类,以最后两个分类之间的临界速度作为公交理想运送速度的标定值.基于五个代表性案例城市的数据分析的结果表明:采用自然间断点法将公交行程速度顺序统计量分为四类或五类时,除北京市外,其余四个城市的公交理想运送速度分位数具有高度一致性,均在90%±3%的范围内.实践应用中,可以简化地取公交行程速度分布的90%分位值作为城市公交理想运送速度.A calibration method of bus ideal transport speed was proposed.The natural discontinuity method was used to classify the ascending bus travel speed data,and the critical speed between the last two classifications was taken as the calibration value of bus ideal transport speed.Based on the data analysis of five representative cities,the results show that when the statistics of bus travel speed sequence are divided into four or five categories by using the natural discontinuity method,the quantiles of ideal bus transport speed in the other four cities are highly consistent,all within the range of 90%±3%,except Beijing.In practical application,the 90%percentile value of bus travel speed distribution can be simply taken as the ideal transportation speed of urban public transport.

关 键 词：交通工程 理想运送速度 自然间断点法 常规公共汽车 百分位数 

分 类 号：U491[交通运输工程—交通运输规划与管理]