Registries managed by ISO TC 204

ISO TC 204 manages registries to maintain information that needs to be updated more frequently than the normal standards update cycle, including the following:

• Registry for ITS Identifiers (RITSI): This registry records assigned values used for various identifier types (e.g., the ITS application identifier (ITS-AID)).
• Registry for ITS Ontologies (RITSO): This registry, which is still under initial stages of development, records the ontology (sometimes called the data model), for ITS and define how key ITS concepts relate to each other.