Book Description
The purpose of the testing reported herein was to assess the performance of the Modified TxDOT Round Wood Post Guardrail System in soil according to the safety-performance evaluation guidelines included in American Association of State Highway and Transportation Officials' Manual for Assessing Safety Hardware (MASH) for Test Level Three. The modification involved reducing the guardrail post embedment depth from 40 inches to 36 inches to reduce the soil resistance and decrease the force required to deflect the post through the soil. The crash test performed was in accordance with MASH Test 3-11 criteria, which involves a 2270P pickup truck impacting the barrier at a target impact speed and angle of 62 mi/h and mi/h and 25°, respectively. The Modified TxDOT Round Wood Post Guardrail System in soil successfully contained and redirected the pickup truck. The barrier performed acceptably for MASHTest 3-11. The maximum dynamic deflection and permanent deformatin were 44.1 inches and 37.0 inches respectively.