This report describes methods used by the public works office in Stockholm for processing and analysis of the road accidents in Stockholm reported by the police. Lists and charts are put together and the accident statistics serve as basis for the road safety programme. A data processing system developed in 1967 was adjusted in 1972 to the new computer generation in the city's computer centre. IBM 370/158 and punching equipment for ordinary punched cards are used. Program-language is cobol. The accident data are stored so as to allow the study of: accident trends in the city and its individual sections regarding number of accidents and their distribution by type of accident, type of conflict and consequent damage; certain common characteristics such as light and weather conditions; and to map out single crossings or street links needing improvements. The road accidents number about 4000 per annum at present. One accident demands 145 signs and a magnetic tape holds 40 million signs. The street register holds 699 regions with 97 crossings each, or in total 67,800 crossings. Currently the register contains 9,000 crossings. The system is both flexible and elastic. It is built up by four parts: a coded street register; a register of pre-defined units (for inst. A thoroughfare); an accident register; a program for cross tabulation, listing and writing out. Samples of forms, lists maps, etc. enclosed. /TRRL/

  • Corporate Authors:

    Stockholm, City of, Sweden

    Trafikbyraan, Fack
    Stockholm 8,   Sweden 
  • Authors:
    • Bertz, C
    • Eriksson, K
    • Fager, M
    • Hedstroem, M
    • WALLIN, B
  • Publication Date: 1974


  • Swedish

Media Info

  • Features: Figures; Tables;
  • Pagination: 66 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00129567
  • Record Type: Publication
  • Source Agency: Swedish National Road and Traffic Research Institute
  • Report/Paper Numbers: R&D Rept.
  • Files: ITRD, TRIS
  • Created Date: Apr 7 1976 12:00AM