Abstract: Traffic performance index is a key index to evaluate the traffic operation of urban roads. Based on the data of 2018 annual traffic performance index in Chongqings main urban area, this paper summarizes the time characteristic of the road traffic performance index in terms of quarters, weeks and working days, analyzes the influences of holidays, weather, bridge restriction, and the opening of bus lanes on the traffic performance index, and studies the significant differences of various influencing factors by means of oneway ANOVA, so as to provide reference for the application of traffic planning and management projects.

Key words: road transport, traffic performance index, time characteristic, oneway ANOVA, Chongqing

摘要： 交通运行指数是评估城市道路交通运行状况的关键指标。以2018年重庆主城区全年交通运行指数监测数据为基础，总结主城区道路交通指数以季度、周期、工作日为单位的时变规律，分析节假日、天气、桥梁限行、公交专用道开通等因素对交通运行指数的影响，并采用单因素方差分析法研究各影响因素的差异显著性，以期为交通规划、管理等项目应用提供借鉴。

关键词: 道路交通, 交通运行指数, 时间特性, 单因素方差分析, 重庆市