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Intelligent Roadway Information System

Intelligent Roadway Information System

What is IRIS?

The Intelligent Roadway Information System (IRIS) is an extensive Advanced Traffic Management System (ATMS) software. More >>


More about the Intelligent Roadway Information System

The Intelligent Roadway Information System (IRIS) is an extensive Advanced Traffic Management System (ATMS) software originally developed by Minnesota Department of Transportation for the Minneapolis-Saint Paul metro area with additions made by Caltrans. IRIS capabilities include:

  • Collection of data from 5500 traffic detectors
  • Automatic operation of 430 ramp meters and posting of variable speed limits based on traffic conditions
  • Control of 340 Intelligent Lane Control Signs and 140 Dynamic Message Signs
  • Incident posting from XML feed from State Patrol CAD
  • Speed and density web map data population
  • Output of an XML file read by web maps to post speed
  • Flow or density graphically
  • Configuration of DMS parameters
  • Display and pan-tilt-zoom control of 550 video cameras
  • Field device error identification
  • Communication error identification
  • Dial-up connection to field devices not on fiber
  • Graphical feature to easily build and modify roadway geometry within the IRIS client
  • Connection to Road Weather Information System (RWIS), Highway Advisory Radio and remote device dial-up
screen capture from MnDOT's IRIS software application

Example from the MnDOT Intelligent Roadway Information System

Additional Resources

This lead state team has completed all planned activities and is no longer active. The information below, as created by the active lead state team, remains available for review by users seeking additional information.


Lead States Team

  • James M. Kranig
    Metro Regional Transportation Management Center Engineer
    Minnesota Department of Transportation