Estimation of freeway traffic variables using information from mobile phones

摘要: The presence of mobile phones on a freeway can be exploited to provide information the traffic behavior. To this end, an extension standard macroscopic model is presented that allows describe dynamic overall cars, together with variables representing percentage communicating phones. A trunk divided into sections, each covered by cell wireless network and associated state describing density vehicles, mean velocity, active measurements phone densities in various cells are used estimate these using extended Kalman filter. complex simulation set-up has been developed for purpose validation. Simulation results reported show effectiveness potential proposed approach.