National ITS Architecture

Architecture Layers Diagram

The National ITS Architecture 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 (transportation practitioners, systems engineers, system developers, technology specialists, consultants, etc.).

The architecture defines:

  • The functions (e.g., gather traffic information or request a route) that are required for ITS
  • The physical entities or subsystems where these functions reside (e.g., the field or the vehicle).
  • The information flows and data flows that connect these functions and physical subsystems together into an integrated system.

If you would prefer a summary document that you can print and read over coffee, a brief document is available that presents the key architecture concepts.

If you have comments or additions to the National ITS Architecture, please complete and submit the feedback form.

National ITS Architecture News

May 2016
Connected Vehicle Reference Implementation Architecture version 2.2 is released and Systems Engineering Tool for Intelligent Transportation (SET-IT) version 2.2 is available as a free download. Read more...

November 2015
A Primer on the Connected Vehicle Environment is available. Read more...

July 2015
Connected Vehicle Reference Implementation Architecture version 2.0 is released. Read more...

What's New In Version 7.1

  • Updated mappings to MAP-21 goals, objectives, and performance measures;
  • An updated mapping to the most current ITS/Connected Vehicle standards;
  • Physical and logical architecture enhancements to support expanded CVISN applications including the Smart Roadside Initiative;
  • New linkages that connect service packages with Connected Vehicle applications that are defined in the Connected Vehicle Reference Implementation Architecture (CVRIA).
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