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Performance Evaluation of the Guardrail to Concrete Barrier Transition - Update to NCHRP 350 Test No. 3-21 with 28

REPORT NUMBER

TRP-03-175-06

AUTHORS

Karla Lechtenberg (Polivka), Ronald Faller, Dean Sicking, John Rohde, Bob Bielenberg, John Reid, Brian Coon

PUBLICATION DATE

2006-10-12

ABSTRACT

Based on the proposed changes to the National Cooperative Highway Research Program (NCHRP) Report No. 350 guidelines, NCHRP Project 22-14(2) researchers deemed it appropriate to evaluate a guardrail to concrete barrier transition system prior to finalizing the new crash testing procedures and guidelines. For this effort, the W-beam guardrail to concrete barrier transition system was selected for evaluation. One full-scale vehicle crash test was performed on the approach guardrail transition system in accordance with the Test Level 3 (TL-3) requirements presented in the Update to NCHRP Report No. 350. For the testing program, a 2270P pickup truck vehicle, which was a �-ton, four-door vehicle with a 711 mm (28 in.) c.g. height, was used. The guardrail to concrete barrier transition system provided an acceptable safety performance when impacted by the �-ton, four-door pickup truck, thus meeting the proposed TL-3 requirements presented in the Update to NCHRP Report No. 350.