A technique is described to program roadside safety improvements that is applicable to freeways and non-controlled access roadways. The technique is based on an NCHRP research study which provided an analysis technique for comparison of recommended safety improvements. The research approach is set forth and the research tasks are outlined. For purposes of inventorying, all hazards were categorized in 3 classes: point hazards, longitudinal hazards, and slopes. A severity index was established and vehicle encroachment characteristics required for quantification of certain traffic operating characteristics are described. Safety improvement alternatives were defined. The application of the safety improvement evaluation procedure consists of: conducting a detailed physical inventory of the highway system to identify and locate each roadside hazard; recommending feasible safety improvement alternatives for each hazard or groups of hazards; and evaluating the recommended safety improvement alternatives using a computerized cost-effectiveness analysis model. The computer analysis model written in Fortran, makes use of 39 subroutines and a main program. Details are given of the field testing procedure, and recommendations are made for future research.

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 105-123
  • Serial:
    • Volume: 16

Subject/Index Terms

Filing Info

  • Accession Number: 00127971
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 29 1976 12:00AM