A SUMMARY OF THE RELATIONSHIPS BETWEEN ACCIDENT INDICES AND RATES FOLLOWING A REDEFINITION OF 'FAILURE'

USING CERRELLI'S ASSOCIATION OF 'FAILURE' WITH ACTIVE INVOLVEMENTS IN THE CASE OF TWO VEHICLES ACCIDENTS, ONE CAN DEFINE FAILURE INDICES, ACCIDENT INVOLMENT INDICES, FAILURE RATES, ACCIDENT INVOLMENT RATES FOR 1-VEHICLE, 2-VEHICLE AND FOR THE UNION CLASS OF 1- AND 2-VEHICLE ACCIDENTS. THE PAPER PRESENTS IN A CONDENSED FORM ALL OF THE DEFINITIONS OF THESE MEASURES, AND A NUMBER OF USEFUL RELATIONSHIPS AND INTERRELATIONSHIPS THAT EXIST BETWEEN THESE DIFFERENT MEASURES. THESE FORMULAE SHOULD PROVE USEFUL IN THE CALCULATION OF THE RESULTING INDICES AND RATES AND OF CONVERTING FROM ONE SET OF MEASURES TO ANOTHER. /NTIS/

• Supplemental Notes:
  • Rept No NBSTR-73-154
• Corporate Authors:

  National Bureau of Standards /US

  /Tech Anal Div
  ,   United States 
• Authors:
  • Craw, A R
• Publication Date: 1973-3

Media Info

• Pagination: 18 p.

Subject/Index Terms

• TRT Terms: Crash rates; Failure; Mathematical analysis; Measurement; Ratios; Traffic crashes
• Uncontrolled Terms: Motor vehicle accidents; Relationships
• Old TRIS Terms: Indexes (Ratios)
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00224415
• Record Type: Publication
• Source Agency: National Technical Information Service
• Files: TRIS
• Created Date: Jul 31 1974 12:00AM