Abstract: There are many complex topological and traffic relationship among traffic objects which have spatiotemporal dynamic characteristics. Many traffic information systems share the common spatial and traffic flow data. Geographic referencing system and more than one linear referencing system may be used in the same application. In this paper, a new spatiotemporal data model based on network including moving objects（STMNMO） is proposed，in order to express the dynamic characteristics and sophisticated relationship in transportation networks, to avoid repeated collection and management, to share data from various applications or various referencing systems. As a integrate data model, it will generalize the common features of many kinds of traffic appilication，to make data integration and share.