Connected Vehicle Reference Implementation Architecture

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

CVRIA has been updated to Version 2.1. This version includes updates to the Communications View with new communications profiles to support different choices in protocols and communications technology for connected vehicle projects. The Enterprise View has been updated to include Business Interaction Matrix (BIM) tables for each application. The Applications pages now include higher-level, Application Interconnect drawings. Application pages now also include a Security tab to show the considerations for physical object and information flow security. This version also includes updates to improve the linkages between the different Views. There is also a Primer document describing some basic principles for deploying in the connected vehicle environment.
Click here to see the details of What's changed in CVRIA 2.1!


The Systems Engineering Tool for Intelligent Transportation (SET-IT) Version 2.1.25 is available as a download from the Tools page. In addition to supporting all of the updated and newly added CVRIA content, this version includes updates to the ConOps generation so that it includes all diagrams with sequences, and all scenarios. See the Tools page and Readme file for more details.



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

  • Reviewing the architecture views
  • 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 Views:

  • 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 views 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.