Crash Test Evaluation of a Prototype Zig-Zag Box Beam End Terminal: MASH Test Designation No. 3–31

Lechtenberg, Karla A.; Holloway, Jim C.; Faller, Ronald K.; Ronspies, Kellon; Midwest Roadside Safety Facility; Nebraska Transportation Center; University of Nebraska--Lincoln

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Crash Test Evaluation of a Prototype Zig-Zag Box Beam End Terminal: MASH Test Designation No. 3–31

2020-12-16
By Lechtenberg, Karla A. ; Holloway, Jim C. ; Faller, Ronald K. ; ...

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Creators:

Lechtenberg, Karla A. ; Holloway, Jim C. ; Faller, Ronald K. ; Ronspies, Kellon

Lechtenberg, Karla A. ; Holloway, Jim C. ; Faller, Ronald K. ; Ronspies, Kellon 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:

New York State Department of Transportation ; United States. Department of Transportation. Federal Highway Administration

New York State Department of Transportation ; United States. Department of Transportation. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Acceptance Tests Box Beams Compliance Test Crash Tests Design Guardrail Terminals Highway Safety Longitudinal Barriers Manual For Assessing Safety Hardware MASH Roadside Appurtenances
Publication/ Report Number:

TRP-03-391-20
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report: 2016 – 2020
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 New York State Department of Transportation (NYSDOT) desired to crash test an end terminal connected to box beam in a “zig zag” formation to evaluate its safety performance under the Manual for Assessing Safety Hardware (MASH 2016) criteria. Test no. NYT-1 was conducted on the “zig-zag” box beam end terminal according to MASH 2016 test designation no. 3-31. The system consisted of standard box beam guardrail supported by steel posts with a “zig-zag” box beam terminal. The posts were spaced at 72 in. (1,829 mm) at center. The top rail mounting height of the box beam rail was 27 in. (686 mm) from the ground line. In test no. NYT-1, the vehicle impacted the system at 62.7 mph (101 km/h) at an angle of 0.1 degrees, resulting in a kinetic energy of 655.5 kip-ft (889 kJ). During impact, the vehicle first contacted the end terminal assembly, then travelled through the zig-zag box beam. This action caused rail section nos. 1 through 3 to deflect downstream and the rail section nos. 4 through 13 to deflect to the traffic side of the system. Post nos. 1 through 13 all deflected downstream, and post no. 14 rotated downstream. Once the vehicle made contact with the straight box beam between post nos. 8 and 9, the rail section snagged on the vehicle. This behavior caused the right fender, the right-front door, and the front of the right-rear door to tear away from the frame. The right-front window also shattered as a result of the snag event. As a result, test no. NYT-1 did not successfully meet the evaluation criteria for MASH 2016 test designation no. 3-31. Per guidance from NYSDOT, no further crash tests were conducted on the system.
Format:

PDF
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US Transportation Collection
Main Document Checksum:

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urn:sha256:e1e6e67c5c749f0a730adb3bf5cb5f31f19f020f622225b9b7e9ef94b9c71954
Download URL:

https://rosap.ntl.bts.gov/view/dot/55977/dot_55977_DS1.pdf
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Crash Test Evaluation of a Prototype Zig-Zag Box Beam End Terminal: MASH Test Designation No. 3–31

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