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Vehicular Sensors Networks (VSNs) are an emerging paradigm in vehicular networks. This new technology uses different kind of sensing devices available in new vehicles, to gather information about the driver's environment (speed, acceleration, temperature, seats occupations, etc.) in order to provide a safer, more efficient and more comfortable driving experience. In this paper, the authors focus on a particular VSN architecture, where the ad hoc network is operated by a telecommunication/service provider (WiMax access point, 2.5/3G base station) to combine non-valuable individual sensed data and extract from them effective feedbacks about the situation of the road in a geographical area (traffic density, unusual traffic behaviour, etc.).
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