MASH Crash Testing and Evaluation of the MGS with Reduced Post Spacing (610211/Task Order CW)

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Final Report Link: MASH Crash Testing and Evaluation of the MGS with Reduced Post Spacing Final Report

TTI Research Supervisor:
James C. Kovar, E.I.T.
Associate Transportation Researcher
Texas A&M Transportation Institute
TAMU 3135
College Station, Texas 77843-3135
(979) 317-2680
[email protected]
Pooled Fund Technical Representative:
Joe Hall, P.E., P.S.
Technical Policy QA/QC
Engineer Value Engineering Coordinator
West Virgina Division of Highways 
1334 Smith
Street Charleston, WV  25305-0430
(304) 414-6442
[email protected]


            The objective of this research project was to evaluate reduced post spacing versions of the Midwest Guardrail System (MGS) for MASH compliance. In pursuit of this project, the research team preformed full scale crash tests and computer simulation efforts. The full-scale crash tests include MASH Tests 3-11 and 3-10 on the quarter post spacing system, MASH test 3-11 on the half post spacing system, and MASH test 3-21 on the transition from full to quarter post spacing.

            This report provides details of the test installations, detailed documentation of the crash test results, and an assessment of the performance of the guardrail systems for MASH TL-3 evaluation criteria.

            In conclusion, the research team demonstrated the MASH compliance of MGS variation with quarter post spacing, half post spacing, a transition between full and quarter post spacing.