Because the theory and application of GIS Web Service
technology in the continual development, the GIS-T Web
Service still leaves many the problem that needed to be
investigated. Our research work will be focus on the following
problems: (1) Since the requirement of the practical GIS
applications in different application domain and field are quite
complicated, a general GIS-T Web service should be integrated
into the different user customized application. (2) GIS spatial
analysis web service is needed for historical data and real-time
data. GIS spatial analysis service plays in important role in the
ITS application systems. For example, for the problem of
choosing the best traffic routes, the GIS spatial analysis service
is urgent needed. (3) Space-Time GIS-T web service refers the
GIS historic data charging. When the city roads are constructed
continuously, the new urban road network and related data in
GIS-T service needed updating. On the other hand, the realtime
traffic flow data, traffic control data, and GIS-T GPS data
are also in continuous changing. How to manage and dealt with
the space-time issue is a very important research subject.