MASH Test Level 2 (TL-2) Short Radius Guardrail Treatment for Texas Roadways

When a secondary road or driveway intersects a highway in close proximity to a bridge, it is difficult to fit the proper guardrail length along the primary roadway to properly protect motorists from hazards underlying the bridge. In such instances, the available right of way and constrained distance between the bridge and secondary roadway or driveway can severely limit the application of effective safety treatments. One solution is to apply a tight radius to the guardrail in order to turn it from the primary road to the secondary road. A crash-worthy solution for a short radius guardrail treatment has eluded the roadside safety research community for two decades. The research team’s innovative short radius guardrail system performance qualifies for implementation on high-speed roadways (62 miles per hour) and will undoubtedly represent a significant improvement in roadside safety; however, there are many sites that are even more restrictive than the new short radius guardrail treatment can accommodate. A large percentage of these sites exist along lower speed roadways. Hence, a shorter, more economical short radius guardrail system suitable for implementation on low speed roadways is needed. Low speed roadways are those that have 45 mph or less speed limits and thus the roadside safety features have to meet Manual for Assessing Safety Hardware (MASH) TL-2 performance criteria.


  • English


  • Status: Completed
  • Funding: $525558
  • Contract Numbers:


  • Sponsor Organizations:

    Texas Department of Transportation

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

    Odell, Wade

  • Performing Organizations:

    Texas A&M Transportation Institute, College Station

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

    Abu-Odeh, Akram

  • Start Date: 20160101
  • Expected Completion Date: 20180228
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01618968
  • Record Type: Research project
  • Source Agency: Texas Department of Transportation
  • Contract Numbers: 0-6913
  • Files: RiP, STATEDOT
  • Created Date: Dec 20 2016 2:40PM