The Architecture Reference for Cooperative and Intelligent Transportation (ARC-IT) version 9.0 is a major release of the US National ITS Architecture Reference that fully defines and upgrades the four architecture views that were initially defined in ARC-IT 8.0.

This includes changes to support vehicle automation content inspired by research results and stakeholder input, including the National Dialogue on Highway Automation.
The most significant enhancements for version 9.0 are:

Significant expansion of the Communications Viewpoint and supporting models. Solutions to information exchanges are more detailed than in prior versions; issues related to the use of specific standards to specific information flows are identified…

Region-awareness. ARC-IT contains content from contributors and ITS deployers outside of the United States;
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