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ITS Standards Program News
SEPTEMBER 2022
NEW! Connected Transportation Interoperability (CTI) Roadside Unit (RSU) Standard Update Published and can be downloaded at no cost here. Updates to CTI 4001 include clarifications, guidance and notes requested from vendors implementing the standard, updates to V2X communications transmission requirements related to LTE-V2X and new requirements related to the transmission interval tolerance for storing and repeating messages.
JUNE 2022
Update to ARC-IT: ARC-IT Version 9.1 is a significant update of the US National ITS Architecture Reference focusing on improvements that support design and requirements specification. Learn more about the most significant enhancements for version 9.1.
APRIL 2022
NEW! Updated NTCIP 1204 v04: Environmental Sensor Stations (ESS) standard update includes objects for new environmental sensor readings and support for multiple environmental sensors connected to a single ESS. NTCIP 1204 v04 can be downloaded at no cost here.
JANUARY 2022
NEW! SAE Publishes SAE J2945/3 Road Weather Update: SAE has published SAE J2945/3 Requirements for Road Weather Applications, which can be downloaded at no cost here. This update includes minor corrections and adds the Road Regulator ID data element that can be utilized to provide more granular security controls through certificate management systems.
AUGUST 2021
NEW! V2I cybersecurity controls integrated into ITS architecture reference: Controls informed by NIST and ISO guidance have been integrated into ARC-IT. Recommendations are a result of threat analyses of the V2I environment focusing on interactions between connected vehicles, roadside equipment and traditional ITS equipment.
MAY 2021
U.S. Department of Transportation Updates Training for the Architecture Reference for Cooperative and Intelligent Transportation (ARC-IT)
The U.S. Department of Transportation (USDOT) has updated the training material accompanying version 9.0 of its Architecture Reference for Cooperative and Intelligent Transportation (ARC-IT), the Regional Architecture Development for Intelligent Transportation (RAD-IT) and the Systems Engineering Tool for Intelligent Transportation (SET-IT).
The online training courses are available directly from the ARC-IT website, providing students with an understanding of how to navigate and use ARC-IT, use the software tools RAD-IT & SET-IT, and how to Use & Maintain a regional ITS architecture.
ARC-IT provides a common framework for planning, defining, and integrating intelligent transportation systems. RAD-IT supports development of regional and project ITS architectures using ARC-IT as a starting point. SET-IT integrates drawing and database tools with ARC-IT so that users can develop detailed ITS project architectures. ARC-IT and the accompanying tool sets help implementers develop architecturesto effectively meet their needs and facilitate efficient, secure, and interoperable ITS deployments.
ARC-IT and its accompanying software tools are available at no cost from ARC-IT website.
MARCH 2021
The Architecture Reference for Cooperative and Intelligent Transportation (ARC-IT) tools that support development of locally customized Regional Architectures and projects have been updated with convenience, performance and reliability enhancements:
- The Regional Architecture Development for Intelligent Transportation (RAD-IT) update includes revisions to the Communications tab to support more configurations, revised flow and interconnect diagram outputs, and revisions to the agreements tab. Read more about What's New in RAD-IT.
- The Systems Engineering Tool for Intelligent Transportation (SET-IT) update includes new features designed to make editing of complex diagrams easier, including a new ‘line text’ tool and revised Enterprise diagram generation, as well as increased options for user-defined information flows. Improvements have been made to both tools to improve performance, reliability and resilience. Read more about What's New in SET-IT.
Both tools are immediately available at no cost. For more information about ARC-IT and these tools, visit the ARC-IT website.
NOVEMBER 2020
Major release of ARC-IT now available. 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, including changes to support vehicle automation content inspired by research results and stakeholder input including the National Dialogue on Highway Automation. Learn more about the most significant enhancements for version 9.0.
MARCH 2020
Updated Standards Status
The status of the following standards changed in March 2020:
| Document # | Title | Update |
|---|---|---|
| SAE J3216 | Taxonomy and Definitions for Terms Related to Cooperative Driving Automation for On-Road Motor Vehicles | Version 1 status: Published |
| SAE J2945/3 202003 | Requirements for Road Weather Applications | Version 1 status: Published |
FEBRUARY 2020
Updated Standards Status
The status of the following standard changed in February 2020:
| Document # | Title | Update |
|---|---|---|
| SAE J2945/5 202002 | Service Specific Permissions and Security Guidelines for Connected Vehicle Applications | Version 1 status: Published |
JULY 2019
Major release of ARC-IT now available.
ARC-IT Version 8.3 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.
Read about the most significant enhancements in version 8.3.
MARCH 2019
Updated Standards Status
The status of the following standard changed in March 2019:
| Document # | Title | Update |
|---|---|---|
| ATC 5301 | Advanced Transportation Controller (ATC) Cabinet Version 02 | Version 2 status: Published |