Update to AASHTO M180 and Associated Material Specifications

Many states use AASHTO and ASTM specifications for their guardrail components. A number of changes to the state of practice and material standards have generated a need to update AASHTO M180 as well as some associated materials specifications. A lack of a consistent standard can increase fabrication costs for hardware suppliers and ultimately transportation agencies. A manufacturer can spend a significant amount of resources matching one state’s standards only to start completely over to match another state’s standards. Consistency will also help to increase competition, allowing for the possibility for lower hardware costs for transportation agencies. In recent years, there has been an increased focus on roadside hardware. Making sure that transportation agencies are using the correct materials in a barrier system has become more important. The objective of this research is to review existing material requirements for guardrail. Accomplishment of this objective shall require the following tasks, at a minimum: (1) review existing state specifications, standard drawings, crash test reports, and material standards (e.g. AASHTO, ASTM, etc.) and (2) identify gaps in material standards, inconsistencies in material standards, and updates to material standards.


  • English


  • Status: Proposed
  • Funding: $300000
  • Contract Numbers:

    Project 22-40

  • Sponsor Organizations:

    National Cooperative Highway Research Program

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

    American Association of State Highway and Transportation Officials (AASHTO)

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

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Project Managers:

    Harrigan, Edward

  • Start Date: 20180619
  • Expected Completion Date: 0
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01672564
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 22-40
  • Files: TRB, RiP
  • Created Date: Jun 18 2018 3:03PM