SBIR-STTR Award

The project will review and critique current extensions of the traditional GIS georelational data model in transportation network analysis. The development of dynamic segmentation and complex linear referencing methods is viewed as an attempt to overcome fundamental deficiencies in how networks are defined in the georelational data model. The georelational model is designed for polygon spatial analysis and is poorly specified for network integration and analysis. Transportation planners and modelers need a more robust data model that builds the transportation GIS from the network features and integrates this with other spatial elements (objects). A new transportation data model is proposed. one that will facilitate network integration (conflation). network simplification (abstraction). and dynamic attribution (segmentation). This is needed to link GIS to transportation demand models and to the emerging simulation models that are being developed to support Intelligent Transportation Systems. The project will evaluate-the feasibility of an object oriented approach to constructing a new GIS-T data model. The model must be independent of existing GIS platforms and capable of working with different GIS technologies and models.Anticipated Results/Potential Commercial Applications of Results:The project will evaluate the feasibility of the object oriented approach and how a new GIS data model for transportation could be constructed. Potential commercial applications include the design specification of an object oriented system that can be applied to GIS technologies.

___(NOTE: Note: no official Abstract exists of this Phase II projects. Abstract is modified by idi from relevant Phase I data. The specific Phase II work statement and objectives may differ)___ The project will review and critique current extensions of the traditional GIS georelational data model in transportation network analysis. The development of dynamic segmentation and complex linear referencing methods is viewed as an attempt to overcome fundamental deficiencies in how networks are defined in the georelational data model. The georelational model is designed for polygon spatial analysis and is poorly specified for network integration and analysis. Transportation planners and modelers need a more robust data model that builds the transportation GIS from the network features and integrates this with other spatial elements (objects). A new transportation data model is proposed. one that will facilitate network integration (conflation). network simplification (abstraction). and dynamic attribution (segmentation). This is needed to link GIS to transportation demand models and to the emerging simulation models that are being developed to support Intelligent Transportation Systems. The project will evaluate-the feasibility of an object oriented approach to constructing a new GIS-T data model. The model must be independent of existing GIS platforms and capable of working with different GIS technologies and models.Anticipated Results/Potential Commercial Applications of Results:The project will evaluate the feasibility of the object oriented approach and how a new GIS data model for transportation could be constructed. Potential commercial applications include the design specification of an object oriented system that can be applied to GIS technologies.