An Update of the Green Book Design Vehicles

The objective of this research is to develop design vehicle material for the 8th Edition of the Green Book that realistically represents the critical vehicles that influence geometric designs. The material should include: (1) Critical dimensions and specifications (or ranges thereof) for design vehicles that can be applied to the design of intersection right and left turn lanes, roundabout elements, and other roadway elements; (2) Guidance on using this dimensional information in design, including selection of design vehicle(s) for a project, determination of when to allow large vehicles to encroach upon other lanes, and discussion on balancing the needs of different modes (e.g., trucks and pedestrians); and (3) An appropriate number of turning path templates that reflect a reasonable range of variability among design vehicles and guidance on when and how they should be applied.


  • English


  • Status: Active
  • Funding: $400000
  • Contract Numbers:

    Project 07-27

  • Sponsor Organizations:

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001

    Federal Highway Administration

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

    American Association of State Highway and Transportation Officials (AASHTO)

    444 North Capitol Street, NW
    Washington, DC  United States  20001
  • Project Managers:

    Jared, David

  • Performing Organizations:


    425 Volker Boulevard
    Kansas City, MO  United States  64110-2241
  • Principal Investigators:

    Potts, Ingrid

  • Start Date: 20190501
  • Expected Completion Date: 20210702
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01672240
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 07-27
  • Files: TRB, RIP
  • Created Date: Jun 18 2018 3:02PM