Abstract: Spatial information technology is one of three domain high techniques in the world.It is widely applying in the fields of urban planning,surveying,military,and other fields.Techniques from GIS,GPS and RS are booming in transportation studies and attracting a lot of researchers from universities,companies,and research institutes.This paper introduces the theories and methodologies for integrating spatial information technology for transportation studies.Then a lot of typical applications such as logistics management,intelligent navigation,traffic information services,and traffic securities are presented.The outlook of the integration of spatial information technology and transportation are highlighted at the end of this paper.