A simple computerised system for the coarse ranking of accident sites in use within the Yorkshire and Humberside region is described in this paper. It is a two-stage process of accident site identification, and ranking. Records from the network information system (nis) accident database are obtained in the form of accident locations plotted to a scale of 1:50000 on transparent sheets which can be laid on the ordnance survey landranger series of maps to the same scale. Clusters of accidents were picked out and the section of road within which they occurred determined. Clusters of 15 or more accidents in 5 years were included in the list of sites for ranking. The first step in the ranking process is to obtain a detailed accident record for each of the sites identified from the nis database. Ranking is done using two bases, accident numbers and accident rates. For accident numbers, higher ranking is given to those sites with more accidents. Where there is a tie, priority is given on the basis of accident severity. The accident rate used for ranking is accidents per million vehicle kilometres. The process of ranking is done by computer, and two tables of computer printout are produced for the top 50 sites, one ranked by accident number and the other by accident rate. (TRRL)

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    LONDON,   United Kingdom  WC1H 0DZ
  • Authors:
    • Hayes, J
  • Publication Date: 1989-5

Media Info

  • Pagination: p. 53-54
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00492777
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS, ATRI
  • Created Date: Mar 31 1990 12:00AM