Recommended higher performance bridge prototype barriers

The implementation of recognizable cost-effective bridge and roadside higher performance level barriers relevant to higher level site risk is essential in order to improve road safety. The traditional low performance barriers of the late 1960's to the late 1980's were only designed and in some cases tested to redirect and contain light traffic with mass up to two tonne, such as a heavy car or a three quarter tonne pickup truck. Most bridge barriers designed and built prior to 1970 do not meet modern requirements for safety. This paper presents results of recent investigations carried out to develop, detail and rationalise prototype barrier systems in accordance with the AS 5100 Design Standard 2004 multiple performance level requirements. The recommended proposed higher performance prototype barriers subject to the approval process in accordance with the AS5100 requirements may in time be accredited and recommended for national use. The paper builds on and provides detail sizing for barrier prototype systems based on concept arrangements presented in previous papers. The introduction of recognizable national barriers will reduce accident severity at bridges while providing cost effective uniform practices. (a) For the covering entry of this conference, please see IRRD abstract no. E218160.

Language

  • English

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Filing Info

  • Accession Number: 01143979
  • Record Type: Publication
  • Source Agency: TRL
  • Files: ITRD, ATRI
  • Created Date: Nov 16 2009 12:18PM