Real-Time Adaptive Ramp Metering - Phase I: MILOS Proof of Concept (Multi-Objective, Integrated, Large-Scale, Optimized System)

Over the last several years, researchers at the University of Arizona’s ATLAS Research Center have developed an adaptive ramp metering system referred to as Multi-Objective, Integrated, Large-Scale, Optimized System (MILOS). The goal of this project is a “Phase I” implementation of the system for a segment of the I-10 corridor in Phoenix, as part of the Arizona Department of Transportation’s (ADOT) Freeway Management System (FMS). In this Phase I effort the objective was to implement software/hardware components so that detector data from the freeway are provided to MILOS and, in turn, MILOS provides ramp-metering rates, which are subsequently set at the ramp controllers through the ADOT Traffic Management System National Transportation Communications for Intelligent Transportation Systems (ITS) Protocol (NTCIP) interface. A proof-of-concept demonstration was successful. The integrated system ran successfully for over one hour. It was concluded that the system accomplished the goal of closing the loop between FMS mainline data collection, the MILOS algorithms, and the new NTCIP ramp controllers connected to the ADOT Traffic Management System. A “Phase II” effort is planned that will identify performance capabilities of MILOS and the communication and detection issues that need to be addressed for wide-scale deployment.

  • Record URL:
  • Corporate Authors:

    University of Arizona, Tucson

    Department of Systems and Industrial Engineering
    Tucson, AZ  United States  85721

    University of Arizona, Tucson

    Center for Excellence in Advanced Traffic and Logistics Algorithms and Systems
    Tucson, AZ  United States  85721

    Arizona Department of Transportation

    206 South 17th Avenue
    Phoenix, AZ  United States  85007

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Head, Larry
    • Mirchandani, Pitu B
  • Publication Date: 2006-12


  • English

Media Info

  • Media Type: Print
  • Edition: Final Report
  • Features: Appendices; Figures; References; Tables;
  • Pagination: 70p

Subject/Index Terms

Filing Info

  • Accession Number: 01046416
  • Record Type: Publication
  • Report/Paper Numbers: ADOT-AZ-06-595
  • Contract Numbers: JPA 05 015T - R058516P - FY04; SPR-PL-1(65)-595
  • Created Date: Apr 15 2007 9:49AM