Analysis of Roadside Safety Devices for Use on Very High-Speed Roadways

The Texas Department of Transportation (TxDOT) is embarking on a multi-decade effort to expand the state’s transportation system. TxDOT has expressed an interest in using very high design speeds (above 80 mph) for some of these facilities to promote faster and more efficient travel within the state. Currently, roadside safety hardware is tested at a speed of 62 mph. This impact speed was derived from crash data collected on roads with design speeds up to 70 mph. The ability of existing roadside safety features to accommodate more severe, higher energy impacts is not known. The objective of this research is to develop roadside safety hardware suitable for use on very high-speed highways. Finite element simulations are used to evaluate the impact performance of selected roadside safety devices subjected to very high-speed impacts. Systems analyzed include single slope concrete barrier, modified thrie-beam guardrail, box beam guardrail, and slip-base sign supports. Design modifications to some of these systems are recommended for further consideration.

  • Record URL:
  • Supplemental Notes:
    • Project Title: Development of Roadside Safety Devices for Very High-Speed Roadways. Report Date: February 2009; Published: September 2009.
  • 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:
    • Sheikh, Nauman M
    • Ferdous, Rubiat
    • Bligh, Roger P
    • Abu-Odeh, Akram Y
  • Publication Date: 2009-9

Language

  • English

Media Info

  • Media Type: Web
  • Edition: Technical Report
  • Features: Figures; Photos; References; Tables;
  • Pagination: 90p

Subject/Index Terms

Filing Info

  • Accession Number: 01140581
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/TX-09/0-6071-1, Report 0-6071-1
  • Contract Numbers: Project 0-6071
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Sep 24 2009 10:49AM