Connected Vehicle Deployer Resources

The United States Department of Transportation (USDOT) seeks to accelerate deployment of interoperable connected technologies. The Connected Vehicle Deployment Technical Assistance (CVDTA) Program was established to foster a community of practice among active early deployers who opt-in to work iteratively and collaboratively with each other and the USDOT to make their projects successful while incrementally producing detailed documentation, shared software and data that the broader Intelligent Transportation Systems (ITS) community – facilitated by professional capacity building programs – can use to deploy their own state-of-the-practice, interoperable solutions.

This page provides information on the following topics:

  • Equipment Loan and Help Desk
  • Open Source Connected Vehicle Tools
  • ITS Standards and Architecture
  • Access to Data and Code
  • Connected Vehicle Technical Reports and Primers

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minus sign Equipment Loan Program and Help Desk

Due to the COVID-19 virus response, we do not have access to our equipment loan inventory and as such will not be issuing new loans at this time. Existing equipment loans will be extending until such a time as USDOT and contractor personnel are back on site at the Turner-Fairbank Highway Research Center. 

Technical assistance can still be accessed via However, due to these extraordinary times, response time may be slightly longer than normal. 

Thank you for your patience and we look forward to resuming our normal operations as soon as possible. 

The USDOT’s Connected and Automated Vehicle Support Services provide infrastructure owner operators (IOOs), equipment manufacturers, and device vendors with technical assistance and equipment loans during connected and automated vehicle (CAV) deployments. By providing knowledge and equipment, the services advance CAV deployments without any cost for users. Support services are provided to all levels of users, including IOOs interested in testing CAV technologies as they consider deployment, vendors interested in bench testing time and space at the Turner-Fairbank Highway Research Center (TFHRC), and organizations in the later stages of CAV deployment, such as the Connected Vehicle (CV) Pilot Sites. For more information, email

The Equipment Loan program and Helpdesk primer provides a description and detailed information about the CAV Support Services.

Equipment Loan Program

The Equipment Loan Program provides a CAV user with the opportunity to become familiar with the types of equipment typically used in CV deployment. Available equipment includes:

  • Roadside Units (RSUs)
  • On Board Units (OBUs)
  • Packet Sniffers
  • Signal Phase and Timing (SPaT) and Map Message Test Devices

Help Desk

The Help Desk provides technical assistance during CAV testing and deployments, including:

  • Device Configuration Support
    • Output review – assistance with submission of case and review of logs
    • J2735 messages – assistance with interpretations of standard, content, and structure
  • Map/Traveler Information Message (TIM) Tool Application Support
    • First-level support for questions or issues related to Map/TIM generation tools
  • Device Testing Support
    • Dedicated short-range communications (DSRC) wireless sniffer access
    • Global Positioning Satellite (GPS) location support
    • Internet Protocol Version 6 (IPv6) assistance
  • Infrastructure Implementation Support
    • IPv6 network design recommendations
    • Physical installation guidance
  • Security Support
    • Network security guidance
    • Security Credential Management System (SCMS) questions and updates
  • V2X Hub
    • Support for V2X Hub User Group
    • V2X Hub installation and setup

Submit a support ticket at:

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plus sign Open Source Connected Vehicle Tools

minus sign Open Source Connected Vehicle Tools

Open Source Software for Intelligent Transportation Systems (OSS4ITS) is an ecosystem that advances the deployment of interoperable transportation systems. The software suite provides infrastructure owner operators (IOOs), software companies, and device manufacturers a clear picture of the available open source software tools for both technical and business audiences. OSS4ITS provides the ITS deployment community with robust, flexible, and extensible open-source software products that are easier to implement and maintain and encourages collaboration by contributing back to accelerate the future deployments. For more information on Open Source Connected Vehicle Tools, visit the OSS4ITS Confluence Page.


The Federal Highway Administration (FHWA) developed the innovative CARMA PlatformSM to encourage collaboration with the goal of improving transportation efficiency and safety. FHWA's interest in advancing transportation systems management and operations (TSMO) strategies with automated driving technology is focused on how infrastructure can move traffic more efficiently. The CARMA Platform is built on robot operating system (ROS) and utilizes open source software (OSS) that enables Cooperative Driving Automation (CDA) features to allow Automated Driving Systems to interact and cooperate with infrastructure and other vehicles through communication.

V2X Hub

The V2X Hub builds on existing open source software (OSS) applications for communication among all parts of a connected deployment including vehicles, infrastructure, pedestrians, cyclists, and emergency services to create an interoperable software environment for V2X research and deployment. The V2X Hub is a message handler that acts as a translator and data aggregator/disseminator for infrastructure components of a connected vehicle deployment.

Operational Data Environment (ODE)

The ITS Operational Data Environment (ODE) is a real-time virtual data router that ingests and processes operational data from various connected devices – including vehicles, infrastructure, and traffic management centers – and distributes the data to other devices and subscribing transportation management applications. Using the ITS ODE within intelligent transportation deployments increases data fluidity and interoperability while meeting operational needs and protecting user privacy. The software’s microservices architecture makes it easier to add new capabilities to meet local needs.

Secure Data Commons (SDC)

The Secure Data Commons (SDC) is a cloud-based analytics platform that enables traffic engineers, researchers, and data scientists to access transportation-related datasets. The U.S. Department of Transportation (USDOT) created the SDC to provide a secure platform for sharing and collaborating on research, tools, algorithms, and analysis involving moderate sensitivity level (personally identifiable information and confidential business information) datasets using commercially available tools, without needing to install tools or software locally.

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plus sign ITS Standards and Architecture

minus sign ITS Standards and Architecture

ITS standards define how ITS systems, products, and components can interconnect, exchange information and interact to deliver services within a transportation network. ITS standards are open-interface standards that establish communication rules for how ITS devices can perform, how they can connect, and how they can exchange data in order to interoperate. Interoperability is key to achieving the full potential of ITS. The Architecture Reference for Cooperative and Intelligent Transportation (ARC-IT) provides a common framework for planning, defining, and integrating intelligent transportation systems. It is a mature product that reflects the contributions of a broad cross-section of the ITS community.

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plus sign Access to Data and Code

minus sign Access to Data and Code

Access to ITS data and open source code is critical for public agencies, private companies, and academia to conduct research and create new ITS innovations and services. Consistent and timely access to data increases the return on federal investment in ITS research and demonstration projects while helping to inform future investment decisions, which speeds deployment of innovative ITS technologies and produces widespread benefits. Open source code encourages code reuse and fosters open-source development saving and promoting interoperable solutions.

ITS DataHub

The ITS DataHub provides a single point of entry to discover USDOT’s publicly available ITS research data, including connected vehicle data. By providing access to these data, the USDOT aims to enable third-party research into the effectiveness of emerging ITS technologies, preliminary development of third-party applications, and harmonization of data across similar collections. Data accessible through the ITS DataHub is quality-checked, well-documented, and freely available to the public. The ITS DataHub is home to over 100 data sets created using ITS technologies. The ITS DataHub’s data sets contain various types of information, such as highway detector data, travel times, traffic signal timing data, incident data, weather data, and connected vehicle data.

ITS CodeHub

ITS CodeHub is the USDOT Intelligent Transportation Systems (ITS) Joint Program Office's (JPO) source code management system. It is a resource for the ITS community to discover open source code, software, and more. The ITS CodeHub promotes a reuse-first mentality and aims to support the discovery of open source code by putting it directly into the hands of developers to customize, transform, expand, and improve, as trends evolve and needs change.

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plus sign Connected Vehicle Technical Reports and Primers

minus sign Connected Vehicle Technical Reports and Primers

The USDOT developed a series of technical documents targeted at capturing best practices from earlier deployers that can be used to inform future deployers. These resources are intended to foster collaboration and enable early deployers to build and maintain interoperable connected vehicle deployments.

Connected Vehicle Pilots Resources

The Connected Vehicle Pilot Deployment Program seeks to combine connected vehicle and mobile device technologies in innovative and cost-effective ways. Ultimately, this program will improve traveler mobility and system productivity while reducing environmental impacts and enhancing safety. The USDOT selected three pilot sites – New York City, Tampa Hillsborough Highway Expressway Authority (THEA), and Wyoming – that are progressing through a Concept Development Phase (September 2015 – August 2016), a Design/Build/Test Phase (September 2016 – Spring 2019) and a final Operate and Maintain Phase (Fall 2018 – Fall 2020). As the CV Pilot sites advance through the stages of development, they have yielded a series of artifacts, including guidance documents, technical assistance webinars and reports that may be of value to other early deployers of connected vehicle technologies to conduct similar planning and design activities.

Connected Vehicle Pilots – Triples Spreadsheet

Aligning information flows across deployments can also help ensure interoperable connected vehicle deployments. To assist other deployers, the Connected Vehicle (CV) Pilot sites – New York City, Tampa Hillsborough Highway Expressway Authority (THEA), and Wyoming – made their Information Flow Triples spreadsheet available. Th Information Flows Triples spreadsheet documents the source and destination physical objects and the information flows exchanged between the objects from each CV Pilot site. The Information Flows Triples spreadsheet is available upon request by emailing For additional information on Information Flow Triples, please see the National ITS Reference Architecture.

CV Pilots – Data Object Alignment Spreadsheets

The Connected Vehicle Pilot sites – New York City, Tampa Hillsborough Highway Expressway Authority (THEA), and Wyoming – made their Data Object Alignment spreadsheets available to stakeholders interested in deploying connected vehicle projects that are interoperable with the CV Pilot sites. Connected vehicle messages include mandatory and some optional data objects. Data Object Alignment spreadsheet are available for the following message types: Basic Safety Message (BSM); Traveler Information Message (TIM); Intersection Geometry (MAP) Message; Signal Phase and Timing (SPAT) Message; and Wireless Access in Vehicular Environments (WAVE) Service Advertisement (WSA) Message. The CV Pilot spreadsheets denoting the data objects used by each CV Pilot site are available upon request by emailing

Security Credential Management System (SCMS) Technical Primer

This technical primer provides an overview of the SCMS, discusses security and design considerations, provides an overview of the SCMS structure, describes the types of certificates used, defines the SCMS process, and summarizes lessons learned from early deployers that have used the SCMS. The Security Credential Management System (SCMS) is a critical component of this connected vehicle environment serving as a message security solution for V2X. It uses a Public Key Infrastructure (PKI)-based approach that employs specialized methods of encryption and certificate management optimized for anonymization to facilitate trusted communication.

Provider Service Identifiers (PSID) & Service Specific Permissions (SSP) Technical Primer

Authenticity and integrity of the communications for connected vehicle applications are ensured using digital signatures and IEEE 1609.2 digital certificates supported by the security credential management system (SCMS). The permissions of the senders are indicated using Provider Service Identifiers (PSID) and Service Specific Permissions (SSPs). The PSID is a globally unique integer value that is associated with a service being provided using a communications system such as 5.9 GHz DSRC WAVE. Associated with PSIDs is a SSP. This technical primer provides an overview of PSIDS and SSPs – including lessons learned from early deployers.

CV Pilots – Security Profiles

This document provides Security profiles being used by the CV Pilot sites and is intended to be used to inform early deployers and guide them to make the best choices for their own deployments. The Connected Vehicle Pilot sites worked collaboratively with the USDOT, their roadside unit (RSU) and onboard unit (OBU) vendors, and their security credential management system (SCMS) vendor (which was the same for all three sites) to jointly develop Service Specific Permissions (SSP) guidance for all of the Provider Service Identifiers (PSIDs) they were implementing. Technical leads from the CV Pilot Sites –and some of their vendors—included members that had subject matter expertise with the SAE and IEEE standards associated with PSIDs and SSPs.

Onboard Unit (OBU) Lessons Learned and Best Practices Report

This document captures lessons learned and best practices for onboard units (OBUs) as experienced by the Connected Vehicle Pilot sites. The document synthesizes key lessons learned, and best practices related to OBUs to assist other early deployers as they deploy connected vehicle technologies in their jurisdictions. OBU lessons learned and best practices were collected from documents and technical presentations produced by the CV Pilot sites, discussions from CV Pilot Technical Roundtables, and other sources. Content is captured for the acquisition/procurement, design, installation, and testing of OBUs.

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For more information, contact:

Michelle Noch
ITS Professional Capacity Building Program Manager
ITS Joint Program Office
U.S. Department of Transportation


Get technical support

Technical Assistance is available to Federal, State and local transportation agencies through:

ITS Peer Program - The ITS Peer-to-Peer Program puts you in touch with technical experts or experienced peers.

ITS Help Line - The ITS Help Line provides technical support by email or telephone at 866-367-7487.


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