Some comparisons of direct and indirect calculations of exposure and accident involvement rates

Two methods of estimating exposure and accident involvement rates were compared. The data used were casualty accident data and vehicle mileage survey data, for Queensland, for the calendar year 1973. The first method directly estimated exposure and accident involvement rates using both these data bases. The other method used only the accident data base and indirectly calculated exposure and specific risk, a measure analogous to accident involvement rate, using an induced model. The emphasis in the present report was on calculating exposure and accident involvement as a function of driver age and sex, although a number of additional data partitions were examined. The general agreement between the results of the two methods was good. Depending, in part, on the data partition examined and the type of calculation used, the maximum exposure value for male drivers occurred in the age range 30-39 years or 40-49 years. For female drivers, the maximum exposure value always occurred in the age range 30-39 years. For accident involvement rate the maximum value generally occurred for drivers in the age range 17-20 years. It was concluded that the particular induced model used in the present report could be useful in determining and monitoring trends in exposure and accident involvement on a yearly basis.


  • English

Media Info

  • Pagination: 263-74
  • Monograph Title: Procedures for analysis of traffic flow patterns using detector loops
  • Serial:
    • Volume: 10
    • Issue Number: 4

Subject/Index Terms

Filing Info

  • Accession Number: 01439205
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Aug 24 2012 10:04PM