Testing and Evaluation of a Modified Steel Post W-Beam Guardrail with Recycled Polyethylene Blockouts (TTI-1997-10)
Author(s):
R.P. Bligh, W.L. Menges
Publication Date:
February 1997
Abstract:
The Federal Highway Administration (FHWA) has formally adopted National Cooperative Highway Research Program (NCHRP) Report 350 as the new performance evaluation guidelines for highway safety features. When tested according to these new guidelines, the widely used G4(1S) steel post, W-beam guardrail system failed to meet the relevant evaluation criteria. This report presents the results of a crash test on a modified G4(1S) steel post, W-beam guardrail system with recycled polyethylene blockouts. The recycled polyethylene blockout was judged to have met the evaluation criteria of NCHRP Report 350. This new blockout is considered suitable for use in both steel post and wood post guardrail systems.
Report Number:
TTI-1997-10
Electronic Link(s):
Document/Product: http://tti.tamu.edu/documents/TTI-1997-10.pdf
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