ACCIDENTS, MILEAGE, AND THE EXAGGERATION OF RISK

The usual interpretation of accidents per mile as a measure of risk exaggerates the apparent risk of low-mileage groups - for example, teenagers and the elderly. The assumption of a linear proportional relationship between mileage and accidents is shoewn not to fit obtained data. Neither would it be expected to fit hypothetical data derived from a 'standard driver' or a group of equally competent drivers driving different numbers of miles. People driving low mileages tend to accumulate much of their mileage on congested city streets with two-way traffic and no restriction of access, while high-mileage drivers typically accumulate most of those miles on freeways or other divided multilane highways with limited access. Because the driving task is simpler, the accident rate per mile is much lower on freeways, and beyond a certain point, a person driving half as many miles as another would be expected to have considerably more than half as many accidents. This and other considerations lead to the suggestion that an induced exposure approach would be a more valid method of correcting accident rates for mileage.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00014575
• Corporate Authors:

  Pergamon Press, Incorporated

  Headington Hill Hall
  Oxford OX30BW,    
• Authors:
  • Janke, M K
• Publication Date: 1991-6

Media Info

• Features: References; Tables;
• Pagination: p. 183-188
• Serial:
  • Accident Analysis & Prevention
  • Volume: 23
  • Issue Number: 2/3
  • Publisher: Elsevier
  • ISSN: 0001-4575
  • Serial URL: http://www.sciencedirect.com/science/journal/00014575

Subject/Index Terms

• TRT Terms: Crash exposure; Crash rates; Drivers; High risk drivers; High risk locations; Human characteristics; Risk assessment; Travel patterns; Travel time; Trip length
• Uncontrolled Terms: Driver characteristics; Exposure; Mileage
• Subject Areas: Highways; Safety and Human Factors; Society;

Filing Info

• Accession Number: 00608382
• Record Type: Publication
• Report/Paper Numbers: HS-041 118
• Files: HSL, TRIS
• Created Date: May 31 1991 12:00AM