Connected Vehicle Reference Implementation Architecture

CVRIA Layers Diagram
The communications viewpoint The physical viewpoint The functional viewpoint The enterprise viewpoint

The Systems Engineering Tool for Intelligent Transportation (SET-IT) Version 1.2 is available as a download from the Tools page. This version adds the ability to import requirements from CVRIA applications and added a mechanism to include context diagrams in ConOps output. See the Tools page and Readme file for more details.


The Training page has been updated with links to CVRIA and SET-IT training.


USDOT is hosting the fourth in a series of interactive workshops to discuss and seek feedback on its CVRIA efforts. This 2-1/2 day event includes training on CVRIA and SET-IT as well as discussions on updates to the architecture and standards plans. The workshop will be June 10-12, 2015 in Cambridge, MA. More information is available at the ITS JPO event announcements website.

Feedback is encouraged as the CVRIA is developed and maintained. Key stakeholder activities include:

  • Reviewing the architecture viewpoints
  • Reviewing the standards development plan
  • Providing inputs for policy development and review policy options

Please use the Contact Us page to ask questions or provide comments to the team.

Welcome to the Connected Vehicle Reference Implementation Architecture (CVRIA) Website! This site is your tool for reviewing, providing feedback, and using the architecture content for standards and project development. CVRIA is being developed as the basis for identifying the key interfaces across the connected vehicle environment which will support further analysis to identify and prioritize standards development activities. CVRIA will also support policy considerations for certification, standards, core system implementation, and other elements of the connected vehicle environment.

As shown in the figure, CVRIA is developed in 4 Viewpoints:

  • Enterprise - Describes the relationships between organizations and the roles those organizations play within the connected vehicle environment
  • Functional - Describes abstract functional elements (processes) and their logical interactions (data flows)that satisfy the system requirements
  • Physical - Describes physical objects (systems and devices) and their application objects as well as the high-level interfaces between those physical objects
  • Communications - Describes the layered sets of communications protocols that are required to support communications among the physical objects that participate in the connected vehicle environment

Another way to view the architecture is from the perspective of the connected vehicle safety, mobility, environmental, and support applications. Each application page shows the subset of each of the viewpoints that pertain to that application.

The project is sponsored and led by the USDOT's ITS JPO, under the management of the ITS Architecture and Standards Programs and in cooperation with the Systems Engineering and Test Bed Programs.