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Urban Traffic Condition Estimation: Let WiFi Do It

Surface transportation is of a great importance in urban life. Fueled by the promise of Smart City, it is becoming more and more common to provide WiFi services in urban Public Transportation System (PTS). In this paper, we present a practical method to make use of the WiFi service provided on buses to estimate real-time urban traffic condition. We validate the proposed method in a city district and show that it is an excellent alternative or supplement of the existing traffic condition estimation services.