Development and Evaluation of a Non-Proprietary Sign Support System for MASH Test Level 3 Conditions (616011/Task Order EC)

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Final Report Link: Evaluation of a Non-Proprietary Sign Support System

TTI Research Supervisor:
Nathan D. Schulz
Assistant Research Scientist
Texas A&M Transportation Institute
Texas A&M University System
TAMU 3135
College Station, Texas, 77843-3135
(979) 317-2694
[email protected]
  Pooled Fund Technical Representative:
Dean Kanitz, P.E.
Statewide Freeway Signing Engineer
Michigan Department of Transportation
425 W. Ottawa St.
Lansing, MI 48909
(517) 335-2855
[email protected]


The purpose of the tests reported here4in was to assess the performance of the U-Channel Sign Support System according to the safety-performance evaluation guidelines included in the second edition of the American Association of State Highway and Transpiration Officials (AASHTO) Manual for Assessing Safety Hardware. The Initial objective was to evaluated the U-Channel Sign Support system according to the complete MASH Test Level 3 matric. However, only MASH Test 3-62 was performed on the U-Channel Sign Support System due to excessive vehicle deformation observed during the crash test. The crash tests were performed in accordance with MASH Tests 3-62:
MASH Test 3-62: An 2270P vehicle weighting 5000lb impacting the Support Structures while traveling at 62 mi/h and 0 and 90 degrees.

This report provides details on the U-Channel sign support system, the crash tests and results, and the performance assessment of the U-channel Sign Support System for MASH TL3 Support structures evaluation criteria.

The U-Channel Sign Support System did not meet the performance criteria for MASH TL-3 Support Structures.