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Publication Number: FHWA-RD-99-065
Date: December 1999
NCHRP Report 350 Test 4-12 of the Modified Thrie Beam Guardrail
This report will be of interest to those State and local highway officials who select, locate, and design traffic barriers. It documents the results of a crash test of a Modified Thrie Beam guardrail with an 8000–kg single unit truck impacting at a nominal speed and angle of 80 km/h and 15 degrees. This is the strength test for Test Level Four (TL–4) in NCHRP Report 350. It was found that the test results met all of the evaluation criteria. The single unit truck was smoothly redirected and remained upright.
Detailed drawings are presented for documentation and to facilitate implementation.
PDF Version (3.56 MB)
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TECHNICAL REPORT DOCUMENTATION PAGE
Form DOT F 1700.7 (8-72) Reproduction of completed page authorized
Keywords: Guardrail, heavy vehicles, single-unit truck, crash testing, roadside safety.
TRT Terms: Guardrails, Thrie beams, Impact tests