EXPLORING THE OVERALL AND SPECIFIC CRASH SEVERITY LEVELS AT SIGNALIZED INTERSECTIONS

The study explored the hypothesis that crash injury levels are affected by both crash specific and intersection specific variables. The ordered probit modeling methodology was adopted to analyze the overall severity levels while regression tree models looked into each severity type and the factors that affect each of them. The results of this research show that when attempting to forecast the number of expected crashes of different severity levels, it is imperative that models are developed for each level of collision instead of aggregating crash types to predict probit model approach, as did many previous researchers, using the tree based regression for each severity level.

Language

  • English

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Filing Info

  • Accession Number: 00989586
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 22 2005 12:00AM