A systems modeling methodology for evaluation of vehicle aggressivity in the automotive accident environment

Details

• Creators:
  Kuchar, Alexandra C. ; Greif, Robert ; Neat, George W.
• Corporate Creators:
  John A. Volpe National Transportation Systems Center (U.S.) ; Tufts University
• Subject/TRT Terms:
  Automobiles Collisions Crash Causes Crash Victim Simulation Head On Collisions Methodology Risk Analysis Safety Systems Modeling Vehicle Aggressivity
• Resource Type:
  Research Paper
• Geographical Coverage:
  United States
• Corporate Publisher:
  Society of Automotive Engineers
• Abstract:
  A systems modeling approach is presented for assessment of harm in the automotive accident environment. The methodology is presented in general form and then applied to evaluate vehicle aggressivity in frontal crashes. The methodology consists of parametric simulation of several
  
  controlled accident variables, with case results weighted by the relative frequency of each specific event. A hierarchy of models is proposed, consisting of a statistical model to define
  
  the accident environment and assign weighting factors for each crash situation case, and vehicle and occupant models for kinematic simulation of crash events. Head and chest
  
  injury results obtained from simulation are converted to harm vectors, in terms of probabilistic Abbreviated Injury Scale (AIS) distributions based on previously defined risk analyses. These harm vectors are weighted by each case’s probability as defined by the statistical model, and summed to obtain a total estimate of harm for the accident environment. The methodology is applied to a subset accident environment consisting of single- and two-vehicle frontal collisions among passenger cars and light trucks. The model is validated
  
  against recent crash statistics, and is found to accurately reflect trends in distribution of injury severity while slightly underestimating moderate to severe injuries. The model is
  
  subsequently exercised for variable sensitivity analyses, wherein the effects of light truck/car population mix are evaluated in terms of their impact on occupant harm within
  
  the subset accident environment.
  
  
• Format:
  PDF
• Collection(s):
  Volpe Center
• Main Document Checksum:
  urn:sha256:f18f8f2d884834e22800e960e80eb1d694d2bb76dc62a33368919bb310f769e6
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/9723/dot_9723_DS1.pdf
• File Type:
  [PDF - 85.44 KB ]