ISO TC204 (Intelligent Transportation Systems)
The ISO TC204 (ITS) GDF standard supports location-based services, with a current focus on car navigation systems. Data model includes features (e.g. roadway, structures, railways), relationships between features and attributes of features or relatiorelationships. Includes roadway features, other transport modes, area features. Focus of attributes is on navigation needs.
The next version of GDF is being called XGDF. Work has begun on adding both an SQL and XML encoding.
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