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Virtual Trip Lines for Distributed Privacy-Preserving Traffic Monitoring (2008)
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BibTeX
@MISC{Hoh08virtualtrip,
author = {Baik Hoh and Marco Gruteser and Ryan Herring and Jeff Ban and Daniel Work and Juan-Carlos Herrera and Alexandre M. Bayen and Murali Annavaram and Quinn Jacobson},
title = {Virtual Trip Lines for Distributed Privacy-Preserving Traffic Monitoring },
year = {2008}
}
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Abstract
Automotive traffic monitoring using probe vehicles with Global Positioning System receivers promises significant improvements in cost, coverage, and accuracy. Current approaches, however, raise privacy concerns because they require participants to reveal their positions to an external traffic monitoring server. To address this challenge, we propose a system based on virtual trip lines and an associated cloaking technique. Virtual trip lines are geographic markers that indicate where vehicles should provide location updates. These markers can be placed to avoid particularly privacy sensitive locations. They also allow aggregating and cloaking several location updates based on trip line identifiers, without knowing the actual geographic locations of these trip lines. Thus they facilitate the design of a distributed architecture, where no single entity has a complete knowledge of probe identities and fine-grained location information. We have implemented the system with GPS
Keyphrases
virtual trip line distributed privacy-preserving traffic monitoring several location update current approach fine-grained location information complete knowledge global positioning system actual geographic location privacy sensitive location location update distributed architecture external traffic monitoring server probe vehicle trip line single entity trip line identifier associated cloaking technique privacy concern promise significant improvement automotive traffic monitoring geographic marker probe identity
