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A comprehensive XML schema for encoding both spatial and non-spatial geographic information. Feature-centric model, defining abstractions of real-world phenomenon (e.g., roads) with properties having names, values, and types. Includes Rules for Application Schemas
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Federal Geographic Data Committee. Modeling teams had representatives from government, industry, and academia. The US Department of Transportation Bureau of Transportation Statistics led the transportation theme model development.
As part of the National Spatial Data Infrastructure, the Geospatial One Stop (GOS) data content standard formalizes how geographic information in any of seven themes can be represented for transfer between government agencies. The transportation theme includes modes of road, rail, transit, air, and navigable water. It is their intent to submit this specification to ANSI for standardization. The road mode of the transportation theme is consistent with constructs found in GDF. It includes the ISO 19133 linear referencing clause. An implementation specification based on OpenGIS GML is anticipated.
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American Association of State Highway and Transportation officials (AASHTO)
Linear Referencing data standard. Provides a standard, generalized content format for specifying a location, applicable to most any linear referencing method.
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