Establishing Guidelines for Ramp Metering Performance Evaluation and Implementation Practices in LA

Urban freeways in most of the US metropolitan areas are operating near or beyond capacity during peak hours due to the significant increase in travel demand. The transportation community and policymakers recognize the need for better traffic management of the available network capacity as a viable alternative to widening and capacity expansion projects. Recently, further emphasis has been placed on Active Traffic Management (ATM) strategies such as ramp metering, speed harmonization, managed lanes and others. ATM strategies aim to control flow entering and exiting the managed areas of the roadway facilities to reduce the occurrence of breakdowns. Ramp metering control strategies are becoming quintessential approaches for alleviating recurrent congestion and improving mobility on freeways. While ramp meters control the traffic flow from on-ramps, they may also result in spillbacks on adjacent surface streets. To solve this problem, traffic management centers deploy queue-override strategies or some of the recently introduced coordinated ramp metering strategies. This project proposes re-evaluating the currently implemented ramp metering and queue override strategies on I-12 and conduct a comparative performance evaluation of different combinations of control solutions for each ramp location. The control solutions may include 1) changing the ramp metering strategy, 2) utilizing other ATM strategies such as hard shoulder running, 3) adding length to the on- and/or off-ramps, 4) adding lanes to the on- and/or off-ramps, 5) widening the auxiliary lanes, or 6) adding length to the auxiliary lanes. Based on the evaluation results, the research team will develop guidelines for implementation of ramp meters in Louisiana.

    Language

    • English

    Project

    • Status: Active
    • Funding: $171213
    • Contract Numbers:

      17ITSLSU14

    • Sponsor Organizations:

      Office of the Assistant Secretary for Research and Technology

      University Transportation Centers Program
      Department of Transportation
      Washington, DC  United States  20590
    • Managing Organizations:

      Office of the Assistant Secretary for Research and Technology

      University Transportation Centers Program
      Department of Transportation
      Washington, DC  United States  20590

      Transportation Consortium of South-Central States

      Louisiana State University
      Baton Rouge, LA  United States  70803
    • Project Managers:

      Hassan, Marwa

    • Performing Organizations:

      Louisiana State University and A&M College

      202 Himes Hall
      Baton Rouge, LA  United States  70803

      Louisiana Transportation Research Center

      4101 Gourrier Avenue
      Baton Rouge, LA  United States  70808
    • Principal Investigators:

      Osman, Osama

    • Start Date: 20170301
    • Expected Completion Date: 20190831
    • Actual Completion Date: 0
    • USDOT Program: University Transportation Centers Program

    Subject/Index Terms

    Filing Info

    • Accession Number: 01650654
    • Record Type: Research project
    • Source Agency: Transportation Consortium of South-Central States
    • Contract Numbers: 17ITSLSU14
    • Files: UTC, RiP
    • Created Date: Nov 12 2017 7:07PM