USDOT ITS Updates ARC-IT 8.0 Reference Framework: Free Workshops

The USDOT’s Intelligent Transportation Systems (ITS) Joint Program Office has released the Iteris-led updated version of the ITS National Reference Architecture that fully incorporates the connected vehicle capabilities from the Connected Vehicle Reference Implementation Architecture (CVRIA) into the Architecture Reference for Cooperative and Intelligent Transportation (ARC-IT). Thus, both architectures have been completely replaced by ARC-IT, which will provide a unifying framework that covers ITS comprehensively, including Connected Vehicle and traditional infrastructure ITS capabilities.

Massoumi, senior vice president and general manager of Transportation Systems at Iteris, said, “Combining the architectures provides one reference architecture for all of ITS in the United States with more breadth and depth than was available before.”

Iteris reports it led the development and evolution of National ITS Architecture for over 20 years, and initiated the CVRIA in 2012. Combining the two architectures into ARC-IT will streamline the vehicle to infrastructure communications guidelines as transportation use changes become more prevalent. Having a reliable framework can also streamline funding, leading to repeatable deployments.

The CVRIA website will remain online through the life of the USDOT’s Connected Vehicle pilots, to serve as a reference for those projects. The architecture team next will be offering a pair of public workshops, where users can explore ARC-IT and its updated software tools (RAD-IT, SET-IT) in detail.

To learn more, the U.S. Department of Transportation (USDOT) will host two free public workshops to describe the integration of the National ITS Architecture, version 7.1 with the Connected Vehicle Reference Implementation Architecture (CVRIA) into the Architecture Reference for Cooperative and Intelligent Transportation (ARC-IT) version 8.0.

ARC-IT version 8.0 is a major upgrade to the National Intelligent Transportation Systems (ITS) Reference Architecture that integrates content evolved from both the National ITS Architecture Version 7.1 and the CVRIA Version 2.2. It is the first version of the National ITS Reference Architecture to fully incorporate connected vehicle capabilities in detail. ARC-IT provides a unifying framework that covers ITS comprehensively, including connected vehicle and traditional infrastructure ITS capabilities. ARC-IT and the accompanying toolsets help implementers develop regional architectures to effectively meet their needs and ensure regulatory compliance, while facilitating efficient, secure, and interoperable ITS deployments. Version 8.0 of the ARC-IT and its accompanying software tools are available at no cost from Additional online training resources will be posted at as they become available.

The ITS Architecture provides a consistent framework to guide the planning and deployment of ITS and now connected vehicle technologies. ARC-IT identifies options for interoperable deployment of technologies from an enterprise, physical, logical, and communications perspective. It also facilitates the ability of jurisdictions to operate collaboratively and harness the benefits of a regional approach to transportation challenges. During the workshop, the USDOT will seek stakeholder feedback on the content and usability of the next-generation ITS Architecture. This workshop will also:

  • Illustrate how ARC-IT relates to the National ITS Architecture, Version 7.1, and to the CVRIA
  • Describe the tools—what they are, what they are used for, and who should use them in planning for deployment
  • Describe how ARC-IT fits into the deployment process.

Representatives from the ITS Architecture team and USDOT’s ITS Program will describe the evolution of the Architecture and will walk participants through the two companion software tools:

  1. Regional Architecture Development for Intelligent Transportation (RAD-IT), which provides all the functionality that regional architects have come to expect from Turbo Architecture. This tool has been updated with a more modern user interface and use of the ARC-IT database.
  2. System Engineering Tool for Intelligent Transportation (SET-IT), which provides architects with the ability to tailor and specify their implementations.

Please note that these workshops are free, but space is limited. Once capacity has been met, no further registrations will be accepted.

Register for the workshop in Dearborn, Michigan on July 26th – 27th

Register for San Jose, California August 9th – 10th