The Role of Preferential Treatment for Carpools in Managed Lanes

With the evolution of high-occupancy vehicle (HOV) facilities to managed lanes, and the increasing level of activity in the development of managed lanes in Texas and nationally, research and guidance defining the role of carpools in priced managed lanes is needed, especially a better understanding of the tradeoffs between carpool exemptions and other project objectives. Increasingly, project objectives reflect not only mobility concerns but funding deficiencies and the need to generate revenue. As a result, allowing exempt users such as carpools requires an evaluation of revenue impacts as well as mobility interests such as person movement, operations, and emissions. This study utilizes a state-of-the-practice review, a 4600-respondent survey of freeway users in Houston and Dallas, and simulation modeling of six alternative HOV scenarios at varying toll rates to identify the tradeoffs associated with carpool toll discounts in new managed lanes.

  • Record URL:
  • Supplemental Notes:
    • Project Title: The Role of Preferential Treatment for Carpools in Managed Lane Facilities. Report Date: October 2008; Published: June 2009.
  • Corporate Authors:

    Texas Transportation Institute

    Texas A&M University System, 3135 TAMU
    College Station, TX  United States  77843-3135

    Texas Department of Transportation

    Research and Technology Implementation Office, P.O. Box 5080
    Austin, TX  United States  78763-5080

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Goodin, Ginger D
    • Burris, Mark W
    • Dusza, Casey M
    • Ungemah, David H
    • Li, Jianling
    • Ardekani, Siamak A
    • Mattingly, Stephen P
  • Publication Date: 2009-6


  • English

Media Info

  • Media Type: Web
  • Edition: Technical Report
  • Features: Appendices; Figures; Maps; References; Tables;
  • Pagination: 150p

Subject/Index Terms

Filing Info

  • Accession Number: 01143751
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/TX-09/0-5286-2, Report 0-5286-2
  • Contract Numbers: Project 0-5286
  • Created Date: Nov 6 2009 11:02AM