In-Service Performance Evaluation of Guardrail End Treatments (2018) / Chapter Skim
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Pages 122-128
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From page 122... ...
Appendix B Glossary and Illustrations of Guardrail End Treatments and Other Roadside Safety Devices Presented below are definitions of terms related to guardrail end treatments and other roadside safety devices and illustrations of device types and crash test conditions, as follows: • Glossary of terms relating to the design and performance of guardrail end treatments, excerpted from the glossary of the 2015 safety analysis report of the American Association of State Highway and Transportation Officials–Federal Highway Administration Task Force on guardrail end treatments (Joint AASHTO-FHWA Task Force on Guardrail Terminal Crash Analysis 2015)
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From page 123... ...
APPENDIX B 123 Box B-1 Definitions of Terms Relating to the Design and Performance of Guardrail End Treatments anchor The mechanism that fixes the ends of a run of guardrail to the ground, thus providing rail tension in the event of [an] impact.
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From page 124... ...
124 PERFORMANCE EVALUATION OF GUARDRAIL END TREATMENTS guardrail terminal, guardrail end terminal, guardrail end treatment, crashworthy terminal, and terminal A device designed to anchor the leading end of a W-beam guardrail while reducing the likelihood of spearing, vaulting, or rolling a vehicle during head-on or angled impacts. head, extruder head, impact head The portion of an extruding terminal that rests on the end of the W-beam rail.
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From page 126... ...
126 PERFORMANCE EVALUATION OF GUARDRAIL END TREATMENTS Box B-2 Definitions of Terms Relating to Crash Testing of Roadside Devices crash cushion A device designed primarily to safely stop a vehicle within a relatively short distance. A redirective crash cushion is designed to contain and redirect a vehicle impacting downstream from the nose of the cushion.
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From page 127... ...
APPENDIX B 127 truck-mounted attenuator (TMA) An energy absorbing device attached to the rear of a truck or utility vehicle.
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From page 128... ...
128 PERFORMANCE EVALUATION OF GUARDRAIL END TREATMENTS REFERENCES Abbreviations AASHTO American Association of State Highway and Transportation Officials FHWA Federal Highway Administration GAO Government Accountability Office AASHTO.
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