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Performance Limits for 6-in. (152-mm) High Curbs Placed in Advance of the MGS using Mash Vehicles Part III: Full-Scale Crash Testing (TL-2)




Jeffrey Thiele, John Reid, Karla Lechtenberg (Polivka), Ronald Faller, Dean Sicking, Bob Bielenberg




A full-scale crash test utilizing the Test Level 2 (TL-2) safety performance criteria of the Manual for Assessing Safety Hardware (MASH) was performed on the Midwest Guardrail System (MGS) offset 6 ft (1.8 m) behind a 6-in. (152-mm) high AASHTO Type B curb with a top mounting height of 31 in. (787 mm) relative to the ground [37 in. (940 mm) relative to the roadway]. In the test, the 2270P vehicle was redirected by the guardrail, and all safety performance criteria were met. Thus, the MGS offset 6 ft (1.8 mm) behind a 6-in. (152-mm) high curb with a top mounting height of 31 in. (787 mm) was deemed to be acceptable according to TL-2 of MASH. Based on test results and prior research, preliminary guidelines were developed for use of the MGS when offset behind curbs.


Roadside Safety, MASH, Roadside Appurtenances, Longitudinal Barrier, MGS, Guardrail, Curb, TL-2, Crash Testing, Compliance Test

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