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U.S.
Department of Transportation
Principles: Technical Functionality
§Functionality of the system requires compliance with
nationwide, universally accepted non-proprietary
communication and performance standards
□Interoperability of equipment, vehicles, and other
devices is necessary to enable mandatory safety
applications as well as applications supporting mobility,
economic competitiveness, and sustainability.
□Standards must be maintained to ensure technical viability.
§The system
must be technically adaptable and viable over time
□Must be backward compatible.
□System must be able to evolve over time as new
technologies become available.