IDENTIFYING UNIQUE DRIVING-EXPOSURE CLASSIFICATIONS

EXPOSURE DATA (ESTIMATES OF VEHICLE MILES OF TRAVEL) WERE OBTAINED IN A NATIONAL SURVEY OF 7145 DRIVERS. BY SUCCESSIVE ANALYSES OF DATA VARIABILITY, EXPOSURE CLASSES WERE DEFINED ACCORDING TO THE INTERACTIONS AMONG INDEPENDENT VARIABLES---DRIVER, VEHICLE, ROAD, AND ENVIRONMENT CHARACTERISTICS. THE BEST PREDICTORS OF EXPOSURE WERE THOSE WHICH ESTABLISHED WHETHER THE DRIVER DROVE ON THE JOB, THE DRIVER'S SEX, THE TYPE OF VEHICLE DRIVEN, AND THE PERCENTAGE OF DRIVING DONE ON CITY STREETS. A HIERARCHY OF EXPOSURE-VARIABLE INTERACTIONS IS RECOMMENDED FOR FUTURE SURVEYS, LIMITED TO VARIABLES PRESENTLY INCLUDED ON ACCIDENT REPORT FORMS SO THAT ACCIDENT RATES MAY BE COMPUTED. THE HIERARCHY VARIABLES, IN ORDER OF IMPORTANCE, ARE VEHICLE TYPE, DRIVER SEX, ROAD TYPE, DAY/NIGHT, DRIVER AGE, AND VEHICLE MODEL YEAR; THEIR INTERACTIONS DEFINE 26 UNIQUE EXPOSURE CLASSES. /AUTHOR/

• Supplemental Notes:
  • pp 1-4, 3 FIG, 3 TAB, 1 APP
• Corporate Authors:

  Highway Safety Research Institute

  /Hit Lab Reports
  ,   United States 
• Authors:
  • Carroll, P S
  • Carlson, W L
  • McDole, T L
• Publication Date: 1971-9

Subject/Index Terms

• TRT Terms: Age; Classification; Crash exposure; Days; Drivers; Hazards; Highways; Night; Risk assessment; Vehicle classification; Vehicles
• Uncontrolled Terms: Criteria; Driver age; Exposure; Highway classification
• Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00221509
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 20 1971 12:00AM