Wide-Area,Four-Dimensional,Real-Time Interactive Transportation System Visualization

Abstract

The four-dimensional (4-D), wide-area traffic visualization tool provides incident management personnel, emergency management personnel, and the general public with the means to achieve situational awareness in as close to a real-world setting as possible. This research developed a system for visualizing 4-D (in which the fourth dimension is time), real-time transportation data for the entire Earth, although only data for the road networks of Washington, D.C.; Northern Virginia; and the entire state of Maryland are currently in the system. This effort employed a combination of technologies including OpenGL and various modeling techniques to develop a scalable, highly interactive 4-D model using available geographic information system (GIS) and transportation infrastructure data in conjunction with real-time traffic management center data. The prototype system interacts with real-time traffic databases to show animations of real-time traffic data (volume and speed) along with incident data (accident locations, lane closures, responding agencies, etc.) and weather data. A user can “fly” or “drive” through the region to inspect conditions at an infinite number of angles and distances. The program also allows users to monitor the status of and interact with traffic control devices such as dynamic message signs, closed circuit television feeds, and traffic sensors; users can even view the location of a fleet of vehicles equipped with Global Positioning System transponders. Because the system uses standard GIS data and relatively standard transportation databases to derive traffic measures, the system can be scaled to incorporate other states, agencies, or countries.

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References

Smith

B. L.

Scherer

W. T.

Evans

and Guerlain

. Dynamic Transportation System Condition Maps: Usability Analysis to Support Improved System Design. Proc., 4th Joint International Symposium on Information Technology in Civil Engineering, Nashville, Tenn., Nov. 15–16, 2003, pp. 1–16.

Pack

M. L.

Weisberg

and Bista

. Four-Dimensional Interactive Visualization System for Transportation Management and Traveler Information. In Transportation Research Record: Journal of the Transportation Research Board, No. 1937, Transportation Research Board of the National Academies, Washington, D.C., 2005, pp. 152–158.

Huang

Dynamic Environmental Visualization Within a Virtual Environment. Presented at 83rd Annual Meeting of the Transportation Research Board, Washington, D.C., 2004.

Huang

and Huang

. Visualization of Massive Terrain with Transportation Infrastructure Using Continuous Level of Detail. In Transportation Research Record: Journal of the Transportation Research Board, No. 1899, Transportation Research Board of the National Academies, Washington, D.C., 2004, pp. 175–180.

Bailey

and Grossardt

. Better Visioning for Transit System Development: Framework for Improvement of Visualization and Its Successful Application. Presented at 83rd Annual Meeting of the Transportation Research Board, Washington, D.C., 2004.

Liapi

O'Connor

and Kwaja

. Highway Interchanges: Construction Schedule and Traffic Planning Visualization. Presented at 82nd Annual Meeting of the Transportation Research Board, Washington, D.C., 2003.

Andersen

G. J.

Visual Information for Car Following by Drivers: Role of Scene Information. Presented at 83rd Annual Meeting of the Transportation Research Board, Washington, D.C., 2004.

Khattak

A. J.

Hallmark

and Souleyrette

. Application of Light Detection Technology to Highway Safety. In Transportation Research Record: Journal of the Transportation Research Board, No. 1836, Transportation Research Board of the National Academies, Washington, D.C., 2003, pp. 7–15.