Guidelines for Implementing Managed Lanes

Managed lanes are highway facilities or a set of lanes where operational strategies are proactively implemented, such as pricing (e.g., tolls, value pricing), vehicle eligibility (e.g., vehicle occupancy, vehicle type), access control (e.g., limited entry/exit points, use of shoulders), traffic control (e.g., variable speed limits, reversible lanes), or a combination of these strategies. Managed lanes provide a holistic approach based upon flexible operating strategies and the proactive management of both the facility and travel demand to improve or maintain system performance. Numerous domestic and international agencies have either constructed or are planning managed lanes. Each of these facilities is unique and presents issues and challenges as they are often implemented in high demand, congested, or constrained corridors. Currently, there is no singular guidance to assist transportation agencies implementing managed lanes. The American Association of State Highway and Transportation Officials (AASHTO's) A Policy on Geometric Design of Highways and Streets (The "Green Book") and other similar guides do not explicitly address the wide range of issues and complexity associated with managed lanes. Some information on managed lanes is included in the AASHTO Guide for High-Occupancy Vehicle Facilities and the AASHTO Guide for the Design of Park-and-Ride Facilities, but since the primary subject matter of these documents is related to high occupancy vehicle (HOV) lanes, they do not address all of the complex managed lanes issues in sufficient detail to serve as a national guide document on the subject. Research is needed to facilitate a better understanding of the unique planning, design, operations, and maintenance considerations associated with managed lanes, and how these factors interact. Managed lanes also have unique aspects related to financing, project delivery, public outreach, enforcement, and system integration that should be considered in each step of the project development process. A guide is needed to support decisionmaking by practitioners at all levels of experience with managed lanes so they can be implemented with the highest probability of success. The objective of this research is to develop guidelines for the planning, design, operations, and maintenance of managed lanes. The final product should be the primary reference on managed lanes and complement other national guidelines. It should be applicable to practitioners at all levels of experience with managed lanes and be used to support informed decisionmaking. The scope of this project is limited to managed lanes on freeways and expressways.


  • English


  • Status: Active
  • Contract Numbers:

    Project 15-49

  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    American Association of State Highway & Transportation Officials

    444 North Capitol Street, NW, Suite 225
    Washington, DC  United States  20001

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Project Managers:

    Goldstein, Lawrence

  • Performing Organizations:

    Texas A&M Transportation Institute, College Station

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

    Fitzpatrick, Kay

  • Start Date: 20130816
  • Expected Completion Date: 0
  • Actual Completion Date: 20150531
  • Source Data: RiP Project 38345

Subject/Index Terms

Filing Info

  • Accession Number: 01547643
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 15-49
  • Files: TRB, RiP
  • Created Date: Dec 12 2014 1:00AM