Further notes on the application of zero-inflated models in highway safety
Dominique Lorda b✉, Simon P. Washingtonc, John N. Ivand e
- aZachry Department of Civil Engineering, TAMU3136, Texas A and M University, College Station, TX 77843-3136, USA. d-lord@tamu.edu
- bZachry Department of Civil Engineering, TAMU3136, Texas A&M University, College Station, TX 77843-3136, USA
- cDepartment of Civil & Environmental Engineering, Ira A. Fulton School of Engineering, Arizona State University, USA
- dDepartment of Civil & Environmental Engineering, University of Connecticut, 261 Glenbrook Road, Unit 2037, Storrs, CT 06269-2037, USA
- eDepartment of Civil and Environmental Engineering , University of Connecticut , 261 Glenbrook Road Unit 2037, Storrs , CT , 06269-2037 , USA
- ✉Corresponding author
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Abstract
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.
TL;DRThe intent of this note is to succinctly articulate additional points that were not provided in the original paper and to help clarify a collective reluctance to adopt zero-inflated (ZI) models for modeling highway safety data. (Semantic Scholar)