Synthesis of Information Related to Highway Problems. Topic 42-10. Extent of Highway Capacity Manual Use in Planning

A primary application of the Highway Capacity Manual (HCM) by transportation agencies is to assess the effect of proposed improvement projects on quality of service. However, the HCM does not address how HCM results should be used in project prioritization and decision making and does not consistently provide measures that are needed by highway agencies for this purpose. For example, transportation agencies might wish to use HCM results to rank proposed projects by delay reduction (expressed in vehicle-hours or person-hours) or by delay reduction per dollar of construction cost. In decision making, transportation agencies might choose to value delay reduction differently within different levels of service. The HCM might include a new section on project prioritization and decision making. All existing and future HCM methodologies could be reviewed and improved to assure that they provide the measures needed by transportation agencies for project prioritization. The objective of this project is to assess the extent to which the HCM is being used by state departments of transportation, metropolitan planning organizations, transit providers and local governments in the prioritization of transportation projects and in the decision-making processes through which projects are selected.


  • English


  • Status: Active
  • Contract Numbers:

    Project 20-05, Topic

  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590

    American Association of State Highway & Transportation Officials

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

    National Cooperative Highway Research Program (NCHRP) Synthesis

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

    Williams, Jon

  • Performing Organizations:

    Transportation Research Board

    500 Fifth Street, NW
    Washington, DC  USA  20001
  • Start Date: 20100701
  • Source Data: RiP Project 26248

Subject/Index Terms

Filing Info

  • Accession Number: 01463948
  • Record Type: Research project
  • Source Agency: National Cooperative Highway Research Program
  • Contract Numbers: Project 20-05, Topic
  • Files: TRB, RiP, USDOT
  • Created Date: Jan 3 2013 2:33PM