In view of the problems of ever-increasing highway construction costs and the limited funding available, it is critical to guardrail selection and installation that a cost-effectiveness formulation be included as an aid in the decision-making policy. This is particularly true for the rural, low-volume highway. For such roads, strict adherence to the conventional guardrail warranting and selection procedures could lead to the installation of guardrails of maximum effectiveness at some sites and no installations at other sites because of the lack of available funds. Thus, a need exists for effective criteria for the selection of guardrail types based on a cost-effectiveness analysis. A typical cost-effective procedure can be used to evaluate the options of (a) removing or reducing the hazard so that that guardrail is no longer warranted, (b) installing the most cost-effective guardrail sysstems that funds permit, or (c) leaving hazards unshielded at sites where guardrail installation is not cost-effective. This report focuses principally on the second of these options; the guardrail is assumed to be warranted. However, the third option (c) can also be exercised for the included hazard types of fixed objects or embankments. Of course, the value of such a cost-effectiveness decision-making policy need not be limited to low-volume roads and could result in more efficient use of available funds for all types of highway systems. The objective of this program was to develop a cost-effectiveness model for guardrail selection that would include cost parameters for various guardrail configurations as well as criteria for analysis of system effectiveness under various dynamic impact conditions. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 8-10
  • Monograph Title: Roadside safety appurtenances
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00196611
  • Record Type: Publication
  • ISBN: 0309028248
  • Report/Paper Numbers: HS-026 748
  • Files: TRIS, TRB
  • Created Date: Aug 28 1979 12:00AM