Evaluation of Usability of IntelliDrive Probe Vehicle Data for Transportation Systems Performance Analysis
Publication: Journal of Transportation Engineering
Volume 137, Issue 3
Abstract
This paper assesses various issues associated with the use of IntelliDrive probe vehicle data generated according to existing protocols. These evaluations are conducted using a virtual IntelliDrive probe vehicle data generator implemented within the Paramics microscopic traffic simulation model. Issues investigated included the ability to monitor queue conditions, the potential for data-sampling bias, effects of privacy rules on collected data, the ability to track vehicles over short distances, the magnitude of data latency induced by the protocols, and the ability to use probe vehicle data to estimate link travel times. The evaluations indicate various improvement needs: (1) generating snapshots at fixed intervals rather than at speed-based intervals, (2) promoting the use of short snapshot intervals, (3) allowing vehicles to include the snapshots they generate while stopped, (4) enabling vehicles to generate link exit snapshots, (5) allowing vehicles to keep uploading new snapshots generated while within range of a roadside communication unit, and (6) revising privacy protocols to ensure that adequate short vehicle tracks can be obtained. The impacts of current privacy rules on the ability to track vehicles over short distances are also outlined.
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Acknowledgments
The evaluations summarized in this paper were conducted as part of a project sponsored by the Michigan Department of Transportation through its Data Uses, Application and Processing (DUAP) program. Development of the simulation model was further partly funded by a grant from the NSFNational Science Foundation. Thanks are also forwarded to individuals at Booz Allen Hamilton, who provided the probe vehicle snapshots that had been collected during the USDOT VII POC test program.
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Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 137 • Issue 3 • March 2011
Pages: 174 - 183
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Nov 13, 2009
Accepted: Jun 8, 2010
Published online: Jul 19, 2010
Published in print: Mar 1, 2011
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