Google-Map-Based Online Platform for Arterial Traffic Information and Analysis
Yao‐Jan Wu, Yinhai Wang · Transportation Research Board 87th Annual MeetingTransportation Research Board · 2008
Web-based mapping technologies have been increasingly utilized for traveler information systems. However, most such systems focus on freeways rather than arterials or urban streets. This paper presents a Google-map-based online platform for arterial traveler information broadcast and analysis. This system is named GATI for convenience. Open source web tools and emerging web technologies, such as Ajax, are used to implement the GATI system to ensure its performance and to minimize its cost. GATI has operated online using the City of Bellevue's data since January 1, 2007. It is not only an arterial traveler information system but also an online analysis tool for urban traffic network. The current version of GATI offers two analysis functions: time-domain analysis and scatter plot analysis. To demonstrate the strength of this platform, three case studies are presented in this paper, one uses historical traffic flow map to identify bottlenecks, one applies before-and-after analysis to evaluate the impact of a snow storm, and the other employs time-series data to evaluate intersection performance. This GATI system, though presented and demonstrated using the City of Bellevue data, is a general technology that can be applied to other arterial networks.