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

REPORT NUMBER

TRP-03-221-09

AUTHORS

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

PUBLICATION DATE

2009-09-30

ABSTRACT

A full-scale crash test using Manual for Assessing Safety Hardware (MASH) Test Level 3 (TL-3) criteria was performed on the Midwest Guardrail System (MGS) offset 8 ft (2.44 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 vehicle was contained by the guardrail, but became unstable and rolled over. Analysis of the test revealed that the right-front tire snagged on a post and detached. The right-rear tire of the pickup traversed over the detached tire, causing the rear of the vehicle to pitch upward. The vehicle subsequently became unstable and rolled over. Thus, the MGS offset 8 ft (2.44 mm) behind a 6-in. (152-mm) high curb with a top mounting height of 31 in. (787 mm) was deemed to be unacceptable according to TL-3 of MASH.

KEYWORDS

Roadside Safety, MASH, Roadside Appurtenances, Longitudinal Barrier, MGS, Guardrail, Curb, TL-3, Crash Testing, Compliance Test

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