In-service performance evaluation of traffic barriers is the process of observing the results of collisions with such devices in real-world collisions. Unlike accident data analyses where performance is deduced only from police reports, in-service evaluations involve police reported data, maintenance information and most importantly a visit to the site relatively soon after the impact has occurred. An in-service evaluation can provide a great deal of detailed information about specific barrier damage and impact performance that is not available in typical accident data analyses. A project is currently underway in the U.S. to examine the performance of several common guardrails and guardrail terminals in several data collection areas located in the States of Iowa, North Carolina and Connecticut. Data was collected during a two-year period on strong post W-beam guardrails, weak-post W-beam guardrails, cable guardrails, the breakaway cable terminal and the modified breakaway cable terminal. Data regarding the effectiveness of each type of traffic barrier, common types of damage to the traffic barriers and the cost effectiveness of barriers in comparison to each other will be presented.

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  • Corporate Authors:

    PTRC Education and Research Services Limited

    Glenthorne House, Hammersmith Grove
    London W6OL9,   England 
  • Authors:
    • Ray, M H
  • Conference:
  • Publication Date: 2000


  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00795563
  • Record Type: Publication
  • Report/Paper Numbers: VTI konferens 13A, Part 4
  • Files: TRIS
  • Created Date: Jul 31 2000 12:00AM