Non-Gating Guardrail End Terminals

Guardrail terminals have evolved to the point where they absorb energy while utilizing tension in the rail to countermand the compression. However, non-gating terminals have yet to be developed. In the present study, the possibility of a non-gating guardrail terminal was investigated. Specifically, the combination of lateral and longitudinal forces that produce non-gating performance were determined from computer simulation. Next, a prototype terminal was crash tested at the research team’s lab. A terminal head was designed to deform guardrail, and its internal structure was adjustable to control the longitudinal force. Posts were designed to control lateral forces by modifying their section modulus. This controlled the force at which the posts buckled in response to a collision. A prototype was subjected to two 15-degree crash tests using a sport utility vehicle (SUV) and a small car. In both tests, the kinetic energy of the test vehicle was fully absorbed and MASH performance criteria would have been met. Neither vehicle passed beyond the terminal head, making these test results the first of their kind.


  • English


  • Status: Completed
  • Funding: $130000
  • Contract Numbers:

    Project 20-30, IDEA 212

  • 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:

    Jawed, Inam

  • Performing Organizations:

    Sicking Safety System

  • Principal Investigators:

    Sicking, Dean

  • Start Date: 20180101
  • Expected Completion Date: 0
  • Actual Completion Date: 20200922

Subject/Index Terms

Filing Info

  • Accession Number: 01701593
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 20-30, IDEA 212
  • Files: TRB, RiP
  • Created Date: Apr 8 2019 3:06PM