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U.S. Department of
Transportation
Common
Understanding
As data moves toward the center of the system –
§It is
assumed that every object that is part of, or is utilizing the services
of the Unified Implementation of the Reference Architecture, has a
common understanding of time, based on Coordinated Universal
Time (UTC) as defined by the “International Telecommunications
Union Recommendation TF.460-6”, to within 1 millisecond
absolute to UTC.
§It is also assumed that
every object that is part of, or is utilizing the services
of the Unified Implementation of the Reference Architecture, has a
common understanding of location, using the DE_Longitude, DE_Latitude
and DE_Elevation units as specified in the “SAE J2735 - Dedicated
Short Range Communications (DSRC) Message Set Dictionary”.
Familiar units are reconstructed at the edges
