LEVELS OF SAFETY IN ACCIDENT STUDIES - A SAFETY INDEX

The need for some index describing the level of safety of the road system arises in studies of accident trends. Difficulties arising from the use of various exposure indices and accident rates, in present use, are described. An analogy from economic production theory, the Cobb-Douglas model, is used to describe various levels of safety. Their model, which basically fits the form of Smeed's formula, relates the number of road fatalities in any country (D), to the number of vehicles (n) and population (p). The parameter a, which was described by smeed as a constant, in this context becomes an index of technology and is accordingly used in this study as a level of safety index. Some possible uses of the index are described, including international comparisons, national trend studies and some factors which might possibly explain changes in the level of safety. (Author) /TRRL/

• Record URL:
  http://arrbknowledge.com
• Supplemental Notes:
  • Proceedings of the 8th Conference.
• Corporate Authors:

  ARRB

  Melbourne, Victoria  Australia 
• Authors:
  • Hakkert, A S
  • Livneh, Moshe
  • MAHALEL, D
• Conference:
  • Australian Road Research Board Conference Proc
• Publication Date: 1976

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 1-6
• Serial:
  • Volume: 8

Subject/Index Terms

• TRT Terms: Conferences; Crash analysis; Crash exposure; Crash rates; Crashes; Economics; Highway safety; Indexes (Information management); Prevention; Regression analysis; Safety; Traffic crashes; Trend (Statistics); Vehicle miles of travel
• Old TRIS Terms: Indexes (Locators)
• ITRD Terms: 1643: Accident; 1661: Accident prevention; 1612: Accident rate; 8525: Conference; 255: Economics; 6588: Regression analysis; 1665: Safety; 6515: Trend (stat); 292: Vehicle mile
• Subject Areas: Data and Information Technology; Economics; Highways; Safety and Human Factors; Security and Emergencies; I80: Accident Studies;

Filing Info

• Accession Number: 00164105
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS, ATRI
• Created Date: Jan 13 1978 12:00AM