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In this paper, we consider the problem of tracking fine-grained speeds variations of vehicles using signal strength traces from GSM enabled phones. Existing speed estimation techniques using mobile phone signals can provide longer-term speed averages but cannot track short-term speed variations. Understanding short-term speed variations, however, is important in a variety of traffic engineering applications-for...
With the widespread usage of mobile phones primarily due to their reduced costs, they are now not only being used for communication but can also assist law enforcing agencies to keep track of speeding vehicles or can be used by organizations to keep track of its employees. The three ways of tracking which are primarily in use are (a) via GPS (b) Using signal attenuation property of a packet and (c)Using...
Improving the performance of a incident detection system was essential to minimize the effect of incidents. A new method of incident detection was brought forward in this paper based on an in-car terminal which consisted of GPS module, GSM module and control module as well as some optional parts such as airbag sensors, mobile phone positioning system (MPPS) module, etc. When a driver or vehicle discovered...
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