The evolution of mobile communication devices and communication technologies has fostered a growing interest in location-aware systems and services. The paper proposes a traffic monitoring system based on Global Positioning Systems (GPS) and Geographical Information Systems (GIS) technologies. The new system will provide more consistent data about the road traffic conditions but also will provide methods for integrating with other Intelligent Transportation Systems (ITS). For communication between de mobile device and central monitoring service it is used GSM technology.
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