Abstract
In an Intelligent Transportation System (ITS), many applications, such as collision avoidance and lane change warning, require real-time information from vehicles on the road. This typically includes detailed status information such as location, speed, heading and a vehicle identifier, which can be used to infer precise movement patterns leading to long-term driver profiling and vehicle tracking. The use of pseudonyms, instead of actual vehicle IDs, allows vehicles to protect their privacy while sharing relevant information. A pseudonym changing scheme (PCS) determines when and how a vehicle should change its pseudonyms to maintain an appropriate privacy level. In this paper, we propose a new comprehensive PCS that utilizes vehicle context and current traffic patterns to leverage the optimum situation for changing pseudonyms. Simulation results indicate that the proposed PCS outperforms existing approaches both in terms of user-centric and adversary-centric performance metrics.
Published Version
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