MEASUREMENT OF HAZARD JUDGMENT BY A STIMULUS ACCRETION TECHNIQUE

AT THE MOMENT WHEN A POTENTIAL HAZARD IS PERCEPTIBLE, THE DRIVER'S PERCEPTION AND JUDGMENT IS CRITICAL. TO SIMULATE THIS MOMENT A TEST DEVICE WITH PHOTOGRAPHS OF TRAFFIC HAZARD SITUATIONS IS USED. EACH HAZARD PHOTOGRAPH IS COVERED OVER WITH BLOCKS. BY REMOVING THE BLOCKS A SUBJECT UNCOVERS THE HAZARD PICTURE AND ACCRETES A STIMULUS PICTURE, HENCE THE NAME STIMULUS ACCRETION IMPENDING HAZARD (SAIH) DEVICE. PRINCIPAL SCORES DERIVED ARE SIZE OF STIMULUS ACCRETED, NUMBER OF MAJOR HAZARD CUES DESCRIBED, AND CONSISTENCY OF RESPONSE STYLE. THE MEASURE WHICH CORRELATED HIGHEST AND MOST CONSISTENTLY WITH ACCIDENT EXPERIENCE WAS THE SIZE OF STIMULUS ACCRETED. SMALLER STIMULUS SIZE SCORES WERE ASSOCIATED WITH HIGHER ACCIDENT INDEXES. THERE APPEAR TO BE SEVERAL DIMENSIONS OF DRIVER RESPONSE WHICH INFLUENCE CAPACITY FOR ACCIDENT AVOIDANCE. THE STIMULUS ACCRETION TECHNIQUE MEASURES ASPECTS OF PERCEPTION AND JUDGMENT. WITH DRIVER-SUBJECTS CATEGORIZED ON STIMULUS SIZE, HAZARDS PERCEIVED AND CONSISTENCY MEASURES, THE SUB-GROUP WITH THE HIGHEST CRITERION SCORE HAD A MEAN ACCIDENT INDEX FIVE TIMES AS GREAT AS THE LOWEST SUB-GROUP. IMPLICATIONS OF THESE FINDINGS FOR ACCIDENT PROPENSITY ARE DISCUSSED. /AUTHOR/

• Corporate Authors:

  Columbia University

  Teachers College, Safety Research and Education Project
  New York, NY  United States  11010
• Authors:
  • Adams, J R
• Publication Date: 1968-2

Subject/Index Terms

• TRT Terms: Crash rates; Drivers; Driving simulators; High risk drivers; Judgment (Human characteristics); Methodology; Photographs; Prevention; Reaction time; Safety; Testing equipment
• Uncontrolled Terms: Driver reaction
• Subject Areas: Highways; Safety and Human Factors; Security and Emergencies;

Filing Info

• Accession Number: 00219977
• Record Type: Publication
• Report/Paper Numbers: 63 pp
• Files: TRIS
• Created Date: Jun 3 1994 12:00AM