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Vehicles are increasingly wirelessly connected and each wireless connection is a potential cyber threat surface. Many of these wireless communications are related to the infotainment systems and are optional, some are not. Since 2008, when the U.S. government mandated the need for real-time tire pressure diagnostics, automotive manufacturers have inserted Tire Pressure Monitoring System (TPMS)-based...
In the 1970s a framework was developed by Oppenlander for evaluation of travel time estimation studies. This framework is still recommended today. This paper develops a new framework to improve upon the ideas set forth by Oppenlander. This new framework is based upon the Kullback-Leibler divergence. It allows for travel time studies to be evaluated in a more comprehensive way. Travel time estimation...
Transportation agencies have invested in extensive infrastructure for vehicle detection and speed estimation. Although knowledge of vehicle speeds helps characterize traffic flow, vehicle accelerations can lead to better characterization. Vehicle accelerations are important in designing signal timings with respect to yellow intervals and green extensions for dilemma zone protection. Vehicle acceleration...
The distribution of travel times over a link in a transportation network can be estimated by observing the actual travel times of individual vehicles traversing the link and creating a histogram of the observations. The fundamental building block of travel time estimation is the re-idenfication of vehicles. A variety of techniques can be used for re-identification, but this paper focuses on electromagnetic...
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