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ARC-IT Version 9.0

ARC-IT Version 9.0

ARC-IT Version 9.0 is a major release of the US National ITS Reference Architecture 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. The most significant enhancements for version 9.0 are:

  • Significant expansion of the Communications Viewpoint and supporting models: Solutions to information exchanges are more detailed than in prior versions; issues related to the use of specific standards to specific information flows are identified. This includes an expansion to support region-awareness, standards applicability assessment and new, completely re-imagined communications diagrams.
  • Region-awareness: ARC-IT contains content from contributors and ITS deployers outside of the United States; such content is annotated to support regional context setting in RAD-IT and SET-IT.
  • New Service Packages:
    • CVO05: Commercial Vehicle Parking
    • CVO20: International Border Registration
    • CVO21: International Border Electronic Clearance
    • CVO22: International Border Coordination
    • MC10: Asset Tracking
    • PS15: Stolen Vehicle Recovery
    • TM24: Tunnel Management
    • TM25: Wrong Way Vehicle Detection and Warning
    • TM26: Signal Enforcement
    • WX04: Roadway Micro-Prediction
  • (Re)-introduction of “environmental terminators” describing system boundaries representing the roadway, and surrounding environment that ITS subsystems might sense or need to accommodate. Users of version 7.1 and earlier might recognize some of these; their purpose now is to begin to understand the relationships between the environment and the entities that own, operate and maintain the roadway and vehicles, particularly if that vehicle is highly automated.
  • In addition to the environmental terminators, several new Physical Objects, including:
    • Parking Management Center, which takes the center-portion of the Parking Management System; the field portion is now called Parking Area Equipment.
    • Roadside Communications Unit, a short-range wireless communications-only field device with no ITS application functionality
    • Wireless Communications Provider System, representing wireless provider infrastructure.

As with v8.3, ARC-IT is available as an online website or as a single download that contains the majority of ARC-IT web site that may be installed locally for off-line use.

The architecture toolset has been upgraded to work with version 9.0 of ARC-IT, to include additional standalone features and maintain the ability for users to exchange information between the tools.


Regional Architecture Development for Intelligent Transportation (RAD-IT) supports development of regional and project ITS architectures using ARC-IT as a starting point.  RAD-IT 9.0 adds:

  • Revision of the Standards tab; now called the Communications tab, this section auto-selects the most appropriate communications solutions for every interface and enables relevant standards outputs
  • Support for Data Distribution Systems
  • Region support; setting the user region affects available service packages and communications solutions
  • An auto-backup facility
  • Update to Marinara, particularly in the V2I Safety Initiative project
  • Various bug fixes.

The Systems Engineering Tool for Intelligent Transportation (SET-IT) integrates drawing and database tools with ARC-IT so that users can develop detailed ITS project architectures. SET-IT 9.0 adds:

  • Revision of the Communications view; all new workflow, new grids and new diagram outputs. Ability to create unique communications solutions that can be imported into RAD-IT
  • Substantial behavioral improvements in the Shape Properties tool
  • Support for both Data Distribution Systems and Communications objects on all physical diagrams
  • Region support; setting the user region affects available service packages and communications solutions
  • An auto-backup facility
  • Update to the sample project, including custom communications content
  • Various bug fixes.