Increased Span Length for the MGS Long-Span Guardrail System Part II: Full-Scale Crash Testing

Meyer, Dylan T.; Reid, John D.; Lechtenberg, Karla A.; Bielenberg, Robert W.; Faller, Ronald K.; Midwest Roadside Safety Facility; Nebraska Transportation Center; University of Nebraska--Lincoln

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Increased Span Length for the MGS Long-Span Guardrail System Part II: Full-Scale Crash Testing

2017-04-07
By Meyer, Dylan T. ; Reid, John D. ; Lechtenberg, Karla A. ; ...

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Creators:

Meyer, Dylan T. ; Reid, John D. ; Lechtenberg, Karla A. ; Bielenberg, Robert W. ; Faller, Ronald K.

Meyer, Dylan T. ; Reid, John D. ; Lechtenberg, Karla A. ; Bielenberg, Robert W. ; Faller, Ronald K. Less -
Corporate Creators:

Midwest Roadside Safety Facility ; Nebraska Transportation Center ; University of Nebraska--Lincoln

Midwest Roadside Safety Facility ; Nebraska Transportation Center ; University of Nebraska--Lincoln Less -
Corporate Contributors:

Midwest States Pooled Fund Program ; Nebraska. Department of Roads

Midwest States Pooled Fund Program ; Nebraska. Department of Roads Less -
Subject/TRT Terms:

[+]

Compliance Test Crash Tests Guardrails Highway Design Highway Safety Length Long Span MASH MGS Midwest Guardrail System Posts Roadside Appurtenances UBSP Posts
Publication/ Report Number:

TRP-03-339-17
Resource Type:

Tech Report
Geographical Coverage:

West North Central States ; United States

West North Central States ; United States Less -
Edition:

Final Report: 2013–2017
Corporate Publisher:

Midwest Roadside Safety Facility ; Nebraska Transportation Center ; University of Nebraska--Lincoln

Midwest Roadside Safety Facility ; Nebraska Transportation Center ; University of Nebraska--Lincoln Less -
Abstract:

The objective of this research study was to design and evaluate the MGS long-span design for use with unsupported spans greater than 25 ft (7.6 m). Two full-scale crash tests were conducted to evaluate the MGS long-span system with increased span lengths and the use of UBSP posts adjacent to the long span. Both tests were conducted according to the TL-3 criteria outlined in MASH. Both test nos. MGSLS-1 and MGSLS-2 were conducted with the 2270P vehicle impacting their respective critical impact points at a speed of 62 mph (100 km/h) and an angle of 25 degrees. Test no. MGSLS-1 was conducted to evaluate the potential for vehicle instability by selecting a critical impact point that maximized the interaction of the front wheel of the pickup truck with the wing wall of the culvert. Test no. MGSLS-2 was designed to evaluate the structural capacity of the system by selecting a critical impact point that maximized the potential for pocketing, wheel snag, and rail rupture. Test no. MGSLS-1 resulted in the vehicle being captured and redirected smoothly by the barrier system with all vehicle decelerations being within the recommended occupant risk limits. Therefore, test no. MGSLS-1 was deemed successful according to the TL-3 safety performance criteria found in MASH. Test no. MGSLS-2 resulted in the vehicle penetrating the barrier and creating multiple detached fragments that could present a safety hazard to oncoming traffic or the occupants of the vehicle. Therefore, test no. MGSLS-2 was deemed unsuccessful according to the TL-3 safety performance criteria.
Format:

PDF
Funding:

TPF-5(193) Supplement #56
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:72b7af34fc7e47a310b6ad1e1376440f578a24b96a1abcfe64ac07866d8375b4
Download URL:

https://rosap.ntl.bts.gov/view/dot/49152/dot_49152_DS1.pdf
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Increased Span Length for the MGS Long-Span Guardrail System Part II: Full-Scale Crash Testing

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