Further notes on the application of zero-inflated models in highway safety. Academic Article uri icon


  • The intent of this note is to succinctly articulate additional points that were not provided in the original paper (Lord et al., 2005) and to help clarify a collective reluctance to adopt zero-inflated (ZI) models for modeling highway safety data. A dialogue on this important issue, just one of many important safety modeling issues, is healthy discourse on the path towards improved safety modeling. This note first provides a summary of prior findings and conclusions of the original paper. It then presents two critical and relevant issues: the maximizing statistical fit fallacy and logic problems with the ZI model in highway safety modeling. Finally, we provide brief conclusions.

published proceedings

  • Accid Anal Prev

altmetric score

  • 3

author list (cited authors)

  • Lord, D., Washington, S., & Ivan, J. N.

citation count

  • 163

complete list of authors

  • Lord, Dominique||Washington, Simon||Ivan, John N

publication date

  • January 2007