Evaluation of Barriers for Very High Speed Roadways

As the Texas Department of Transportation (TxDOT) plans for future expansion of the state’s highway network, interest in higher design speeds has been expressed as a means of promoting faster and more efficient travel and movement of goods within the state. TxDOT funded project 0-6071 as part of a proactive consideration of safety on these high-speed facilities. This project began the process of developing roadside safety hardware suitable for use on high-speed highways. The impact conditions selected for the design, testing, and evaluation of this high-speed hardware include a speed of 85 mi/h and an angle of 25 degrees for barrier impacts. The design vehicles are those specified by the pending AASHTO Manual for Assessing Safety Hardware (MASH) and include a 5000-lb, ½-ton, 4-door pickup truck and a 2425-lb passenger car. After consideration of several barrier systems, two designs were selected for further evaluation through full-scale crash testing. These included an energy absorbing bridge rail concept and a modified wood post thrie beam guardrail. The results of the full-scale crash testing are presented and recommendations for future research are discussed.

  • Record URL:
  • Supplemental Notes:
    • Project Title: Development of Roadside Safety Devices for Very High Speed Roadways. Report Date: January 2010; Published: March 2010.
  • Corporate Authors:

    Texas Transportation Institute

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

    Texas Department of Transportation

    Research and Technology Implementation Office, P.O. Box 5080
    Austin, TX  United States  78763-5080

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Bligh, Roger P
    • Sheikh, Nauman M
    • Obu-Odeh, Akram Y
    • Menges, Wanda L
  • Publication Date: 2010-3

Language

  • English

Media Info

  • Media Type: Web
  • Edition: Technical/Test Report
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 152p

Subject/Index Terms

Filing Info

  • Accession Number: 01155718
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/TX-10/0-6071-2, Report 0-6071-2
  • Contract Numbers: Project 0-6071
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Apr 26 2010 2:35PM