Apply Cellular Network Data to Detect Freeway Traffic State Using Virtual Sensor Network

摘要

The most popular source of colleting real-time traffic information is loop detection system, and the popularity of wireless communication provides a low-cost approach to collect positionrelated and time-related data from cellular network for traffic state detection. Constructing a virtual sensor network with the basic parameters of cellular network may have the similar functions as what loop detector system has. This paper introduces the construction procedure of virtual sensor network, proposes an easily implemented traffic speed and volume detection model. Finally, the preliminary results from one operational cellular probe traffic data collection system are shown to verify that the proposed method is doable and has the potential for large scale application.