Investigation and MASH Full-Scale Crash Testing of the Buried-in-Backslope Terminal Compatible with Midwest Guardrail System

Buried-in-backslope (BIB) terminal designs for beam guardrails were developed under the National Cooperative Highway Research Program (NCHRP) Report 350 criteria for 27¾-in. high guardrail systems. The design terminates a W-beam guardrail installation by burying the end terminal in the backslope. When properly designed and located, this type of anchor eliminates the possibility of an end-on impact with the barrier terminal and minimizes the likelihood of vehicular intrusion behind the barrier. Considering the increase in guardrail height to 31?in. in recent years, there is a need to modify the BIB terminal design for a 27¾-in. high guardrail to satisfy current crashworthiness standard criteria for a 31-in. high guardrail. The crash tests reported in this paper were performed in accordance with the Manual for Assessing Safety Hardware (MASH) Tests 3-34 and 3-35 for non-gating terminals, which represent the tests considered necessary to demonstrate MASH compliance of the device. The TL-3 BIB terminal system met MASH requirements and is considered MASH compliant. It is considered suitable for implementation at V-ditch locations with a 4H:1V or flatter foreslope where a MASH TL-3 BIB terminal system is needed and/or desired.

• Record URL:
  https://doi.org/10.1177/03611981211033289
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
• Supplemental Notes:
  • Chiara Silvestri Dobrovolny https://orcid.org/0000-0002-7909-8180 © National Academy of Sciences: Transportation Research Board 2021.
• Authors:
  • Dobrovolny, Chiara Silvestri
  • 0000-0002-7909-8180
  • Bligh, Roger
  • 0000-0001-5699-070X
  • Kiani, Maysam
  • 0000-0001-9123-7895
  • Jeffers, Jeff
• Publication Date: 2021-12

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 1306-1316
• Serial:
  • Transportation Research Record: Journal of the Transportation Research Board
  • Volume: 2675
  • Issue Number: 12
  • Publisher: Sage Publications, Incorporated
  • ISSN: 0361-1981
  • EISSN: 2169-4052
  • Serial URL: http://journals.sagepub.com/home/trr

Subject/Index Terms

• TRT Terms: Backslopes; Crash tests; Design; Guardrail terminals; Highway safety
• Identifier Terms: AASHTO Manual for Assessing Safety Hardware; NCHRP Report 350
• Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 01779036
• Record Type: Publication
• Files: TRIS, TRB, ATRI
• Created Date: Aug 13 2021 11:25AM