Develop Transition for MASH Test Level 4 (TL-4) Compliant Guardrail System

The Performing Agency shall develop and test guardrail end-transition for the metal guardrail developed under the recently completed Receiving Agency’s project. The guardrail design that was developed and crash tested under a past project had incorporated an end-transition design that transitioned to the standard Manual for Assessing Safety Hardware (MASH) Test Level 3 (TL-3) W-beam guardrail and standard guardrail end-terminals. However, this transition design was not evaluated through impact simulations or full-scale crash testing. The Performing Agency shall evaluate the previously developed end-transition design through simulation and full-scale crash testing. If the transition design of the existing project is determined to be inadequate after the simulation analyses, the Performing Agency shall recommend changes to the end-transition design and evaluate the modified design through further impact simulation analysis. Once the transition design has been developed, the Performing Agency shall perform full-scale crash testing to evaluate the transition design in accordance with MASH TL-3 evaluation criteria for guardrail transitions. The Performing Agency shall provide a transition design that allows full implementation of the TL-4 guardrail previously developed under the existing project..


  • English


  • Status: Completed
  • Funding: $239131
  • Contract Numbers:


  • Sponsor Organizations:

    Texas Department of Transportation

    125 E. 11th Street
    Austin, TX  United States  78701-2483
  • Managing Organizations:

    Texas Department of Transportation

    125 E. 11th Street
    Austin, TX  United States  78701-2483
  • Project Managers:

    Jensen, Darrin

  • Performing Organizations:

    Texas A&M Transportation Institute

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

    Sheikh, Nauman

  • Start Date: 20210901
  • Expected Completion Date: 20230531
  • Actual Completion Date: 20230531

Subject/Index Terms

Filing Info

  • Accession Number: 01782711
  • Record Type: Research project
  • Source Agency: Texas Department of Transportation
  • Contract Numbers: 0-7120
  • Files: RIP, STATEDOT
  • Created Date: Sep 23 2021 11:37AM