A Methodology for the Geometric Standardization of Vehicle Hoods to Compare Real-World Pedestrian Crashes

The objective of this paper is to describe a standardization method that allows injury researchers to directly compare pedestrian hood contact points across a variety of hood sizes and geometries. In order to standardize hood contact locations a new coordinate system was created at the geometric center of the hood. Standardizing hood contact locations was done by turning each coordinate location into a ratio of the entire length or width of the hood. The standardized pedestrian contact locations could then be compared for various hood sizes. The standardized hood was divided into a three-by-three grid to aggregate contact points into hood regions. Data was obtained from the National Highway Traffic Safety Administration's Pedestrian Crash Data Study from 1994 to 1998. To understand injury severity with respect to pedestrian hood contact location, the injuries were narrowed to the single most severe Abreviated Injury Scale injury to the pedestrian and hood location at which that injury was sustained. Of the 97 pedestrian/vehicle cases, pedestrians received 270 injuries from 141 unique hood contact locations. After standardization, 36%, 28%, 36% of all contact points were located on the left, center and right side of the hood respectively. Vertically, 26%, 45%, 28% of contacts occurred at the front, middle, and rear regions of the hood respectively. The middle passenger side of the hood contained the most number of AIS 3+ injuries. By using real-world crash data, engineers can make evidence based decisions to decease the severity of pedestrian injuries.


  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 193-198
  • Monograph Title: Annals of Advances in Automotive Medicine. 52nd Annual Scientific Conference, San Diego, California, October 2008
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01153501
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 29 2010 12:16PM