ION Technical Content
GPS-Based Travel Data Collection
| Abstract: | The high costs and limited accuracy of traditional travel time and speed data collection have hindered planner and engineer use of these data for transportation studies. There are a number of opportunities, given advances in technology, to devise much more cost-effective, comprehensive travel time data collection systems than have been possible in the past. This report focuses on the potential of GPS technologies for travel time and speed studies. GPS technologies may be the most useful and cost- effective method of collecting a significant quantity of travel time and speed data in the near term. It is by far the most flexible, and has the potential to revolutionize transportation data collection in a variety of areas. This report will present the results of travel time and speed data collection projects in Northern Virginia that were based on GPS technologies. It will describe the data collection methods, the data processing, and the analysis that was performed. A major focus of the effort was to geographically reference GPS data points to transportation network facilities. This utilized data smoothing, map matching, path building, and data assimilation techniques in order to build statistically representative estimates of travel performance on each segment of a roadway network. The report includes a critique of GPS-based data collection and recommendations for further research and procedural enhancements. The general conclusion is that GPS data collection is cost-effective and provides a wealth of information and insight into the dynamics of traffic congestion. |
| Published in: |
Proceedings of the 9th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1996) September 17 - 20, 1996 Kansas City, MO |
| Pages: | 509 - 517 |
| Cite this article: | Roden, David B., "GPS-Based Travel Data Collection," Proceedings of the 9th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1996), Kansas City, MO, September 1996, pp. 509-517. |
| Full Paper: |
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