Analysis of In-Service Safety Performance of Wire Rope Safety Barriers

Numerous studies report a reduction in severe run-off-road and head-on crashes pursuant to deployment of wire rope safety barrier (WRSB). One of these studies, the Eastlink study, used an incident data system which collected nearly all crash events on the Eastlink (a tolled motorway in Melbourne, Australia). There were 86 crash events into WRSB over an 18-month period from June 29, 2008, until December 31, 2010. The analysis focused on impacts that were close to the impact conditions in testing standards and included the following crash conditions: on the main roads; excluded heavy vehicles greater than 10 tons; and excluded multivehicle crashes. There were no impacts by motorcyclists in the sample. The 61 impacts with wire rope barriers (flexible barriers) were compared to single vehicle run-off-the-road crashes when a vehicle impacted another roadside objects (19 crashes) or when a vehicle did not hit an object (six crashes). There were no fatal crashes. Further research that would be helpful includes data from more motorways, control for WRBS type, and for a broader range of crash conditions (including secondary impacts and heavy vehicle impacts). The work on residual risk is based on the Austroads project ST1767 on Safe System Infrastructure and indicates that certain design factors increase probability of a severe injury outcome. Victorian and South Australian WRSB casualty run-off-road crashes were examined. Directions for future research are discussed.


  • English

Media Info

  • Media Type: Digital/other
  • Features: References; Tables;
  • Pagination: pp 122-124
  • Monograph Title: Roadside Safety Design and Devices: International Workshop, March 26, 2015, Melbourne, Australia
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01676069
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Jul 24 2018 3:16PM