Evaluation of a Modified Three Cable Guardrail Adjacent to Steep Slope

Terpsma, Ryan J.; Polivka, Karla A.; Sicking, Dean L.; Rohde, John R.; Reid, John D.; Faller, Ronald K.; Midwest Roadside Safety Facility; University of Nebraska--Lincoln

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Evaluation of a Modified Three Cable Guardrail Adjacent to Steep Slope

2008-03-08
By Terpsma, Ryan J. ; Polivka, Karla A. ; Sicking, Dean L. ; ...

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English

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Creators:

Terpsma, Ryan J. ; Polivka, Karla A. ; Sicking, Dean L. ; Rohde, John R. ; Reid, John D. ; ... More +

Terpsma, Ryan J. ; Polivka, Karla A. ; Sicking, Dean L. ; Rohde, John R. ; Reid, John D. ; Faller, Ronald K. Less -
Corporate Creators:

Midwest Roadside Safety Facility ; University of Nebraska--Lincoln

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

Midwest States Regional Pooled Fund Program ; Nebraska. Dept. of Roads ; United States. Federal Highway Administration

Midwest States Regional Pooled Fund Program ; Nebraska. Dept. of Roads ; United States. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Acceptance Tests Cable Anchor Cable Guardrail Cables Compliance Testing Crash Testing Design Embankments Guardrails Highways Highway Safety I85: Safety Devices Used In Transport Infrastructure Roadside Appurtenances Roadside Structures Safety And Human Factors Slope Slope Failure Slope Stability Traffic Safety
Publication/ Report Number:

TRP-03-192-08
Resource Type:

Tech Report
Geographical Coverage:

United States ; Nebraska

United States ; Nebraska Less -
TRIS Online Accession Number:

01099460
Edition:

Final Report
Corporate Publisher:

Midwest States Regional Pooled Fund Program
Abstract:

The three cable guardrail system is most commonly used to protect motorists from roadside slopes. Due to the fact that the system is limited to sites where relatively large barrier displacement is acceptable, concern arises when the system must be placed close to steep roadside slopes. The objective of this study was to evaluate a three cable barrier system placed adjacent to 1.5H:1V slopes. The three cable system in this test utilized quarter-post spacing. In addition, the offset from the slope break point was 1,219 mm (4 ft). One full-scale crash test, a 2,032-kg (4,481-lb) pickup truck impacting at a speed of 99.1 km/h (61.6 mph) and at an angle of 23.6 degrees, was conducted and reported in accordance with the requirements specified in the National Cooperative Highway Research Program (NCHRP) Report No. 350, Recommended Procedures for the Safety Performance Evaluation of Highway Features. Based on the results and analysis of the full scale test, it was determined that the three cable guardrail system with quarter-post spacing and 1,219 mm (4 ft) offset from the slope break point performed adequately according to NCHRP Report No. 350 TL-3 requirements.
Format:

PDF
Funding:

SPR-3(017)
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:9fa4c111b7d8f9df4aedd40ba2127e13efca7de6049def6d202638828cb15e17
Download URL:

https://rosap.ntl.bts.gov/view/dot/39586/dot_39586_DS1.pdf
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Evaluation of a Modified Three Cable Guardrail Adjacent to Steep Slope

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