GML encoded traffic information web services system

This paper refers and implements a XML Web services, which supports the net-worked interchange of traffic information. XML Web services are expected to be the fundamental building blocks in the move to distributed computing on the Internet. As an interchange format, the GML encodes the semantics, syntax and schema of geospatial and geoprocessing-related information resources. It can provide great benefits to utilize easily as an XML encoding format. This paper proposes a full coverage of interoperable traffic information services. It supports full system elements consisting of 3 different layers. A traffic information database layer contains road information including data for car navigation systems and traffic information updated by real time. A traffic analyzing server layer gets traffic information from the DB and handles them based on processing algorithms. A web services interface layer receives users' requests on the web services architectures. For communications, SOAP protocols and WSDL documents are used that can guarantee an interoperability of a system regardless of different platforms and service channels. With regarding to the proposed server, contributory points and discussing speech are described. Through this paper, we are able to propose a prototype model for real geospatial services from an implementation viewpoint.