基于Web API的城市交通运行指数模型构建

Establishment of Urban Traffic Operation Index Model Based on Web API: A Case Study of Kunming City

摘要:

为弥补传统数据采集困难，提出应用Web API技术手段在短时间内获取城市路网数据的思路和方法。以昆明市二环内路网区域为研究对象，通过对区域路段连续17h的行程车速提取和处理，刻画出路网拥堵时空分布图，以此建立交通运行指数模型，结果表明昆明二环区域路网具有明显的“双峰”特征，晚高峰交通运行指数差于早高峰，与出行者早间通勤和晚间多元化出行目的规律吻合。选取具有代表性的功能区从路网和道路两个层面进行拥堵发生时间、持续时长和平均车速分析，为交管部门缓解交通拥堵和指定精细化管理措施提供依据。

Abstract:

To make up for the difficulties of traditional data collection, the idea and method of obtaining urban road network data in a short time by applying Web API technical means are proposed. Taking the road network area within the Second Ring Road of Kunming City as the research object, by extracting and processing the travel vehicle speed of the regional road sections for 17 consecutive hours, the spatio-temporal distribution map of road network congestion is depicted. Based on this, a traffic operation index model is established. The results show that the road network in the area of Ring II Road in Kunming has obvious “double-peak” characteristics. The traffic operation index in the evening peak is worse than that in the morning peak, which is in line with the pattern of morning commutes and diversified evening travel purposes of the travelers. The representative functional areas are selected to analyze the occurrence time, duration and average vehicle speed of congestion from both the road network and road levels, providing a basis for traffic management departments to alleviate traffic congestion and formulate refined management measures.