面向交通信息与改道建议实时发布的数据收集建模研究——以上海市延安西路为例

Data Collection and Modeling for Real-Time Broadcasting of Traffic Information and Detour Suggestions——Case Study of West Yan′an Road

随着经济的快速发展,城市居民出行量迅猛上升。车辆安装GPS导航系统日渐成为趋势,在交通运行方面显示出一定优势。该项目旨在通过感应系统收集交通拥堵状况信息进行量化分析,根据分析结果对车辆路线选择提出建议,以提高交通运行效率。本项目选择上海延安西路的一个区段为例,通过连续一周各个时段的GPS定点道路流量数据收集,获得实时交通信息样例。项目对数据进行时空聚类分析,判别主路和辅路中各个路口的交通拥堵时段,为可否换道省时的时空决策提供依据。案例表明,本研究采用的集成3S技术的时空数据分析和决策方法,可为上海交通状况优化和管理效率提高提供有价值的参考意见。

With the fast economic development in China,intra-city travels have been increasing rapidly.Vehicles equipped with GPS navigation systems become a trend and demonstrate some advantages for both personal travel and traffic management.This project aims to provide real-time traffic information and detour suggestions to on-road drivers through a computer model.The project selects part of West Yan＇an Road and its vicinity as the study area to demonstrate the issue.The sample real-time traffic data are obtained through a week＇s GPS fixed-point observations at several time periods.Spatial cluster analysis is performed on the data to determine the time periods of traffic jam in main roads and side roads.This information forms the basis for spatiotemporal decision making on detouring.The case study demonstrates that the spatiotemporal analysis and decision making by integrating 3S technologies could provide a valuable tool for optimizing the traffic situation in cities and improving management efficiency.