Comparisons of Delta-V and Occupant Impact Velocity Crash Severity Metrics using Event Data Recorders

This paper compares the ability of delta-V and the occupant impact velocity (OIV), a competing measure of crash severity in predicting occupant injury in real world collisions. A majority of the analysis is performed that uses 191 cases with vehicle data from Event Data Recorders (EDRs), which are matched with detailed occupant injury information. Cumulative probability of injury risk curves are generated using binary logistic regression for al data, a belted subject, and an unbelted subject. By comparing the available fit statistics and performing a separate ROC curve analysis, the more computationally intensive OIV is found to offer no significant predictive advantage over delta-V. The paper describes how delta-V has traditionally been used as a measure of crash severity and predictor for occupant injury for vehicular crashes. The OIV, as defined by the flail space model is a competing severity metric used by the roadside safety community to evaluate occupant risk. Unlike delta-V, the OIC requires a full crash pulse to calculate a theoretical impact velocity of the occupant with the vehicle interior. Although this provides a more physically representative model of occupant kinematics, there has been no study to date that evaluates whether the flail space model provides additional benefit in terms of injury prediction in real world collisions.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/15400360
• Corporate Authors:

  Association for the Advancement of Automotive Medicine (AAAM)

  P.O. Box 4176
  Barrington, IL  United States  60011-4176
• Authors:
  • Gabauer, D J
  • Gabler, Hampton C
• Conference:
  • Association for the Advancement of Automotive Medicine 50th Annual Proceedings
  • Location: Chicago Illinois, United States
  • Date: 2006-10-16 to 2006-10-18
• Publication Date: 2006

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 57-71
• Monograph Title: Association for the Advancement of Automotive Medicine 50th Annual Proceedings, Chicago, Illinois, October 16-18, 2006

Subject/Index Terms

• TRT Terms: Crash analysis; Crash risk forecasting; Crash severity; Crash tests; Crashes; Event data recorders; Injury severity; Occupant dynamics; Risk analysis
• Identifier Terms: Abbreviated Injury Scale; Injury Severity Score
• Uncontrolled Terms: Crash severity; Delta-v; Impact speed; Occupant (Veh); Occupant safety; Occupant seating position
• Subject Areas: Highways; Research; Safety and Human Factors; Vehicles and Equipment; I81: Accident Statistics; I83: Accidents and the Human Factor; I84: Personal Injuries; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 01037590
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 29 2006 2:52PM