Correcting erroneous crash locations in transportation safety analysis

Robert Tegge, Yanfeng Ouyang

Research output: Contribution to journalArticlepeer-review


Errors and inconsistencies in crash location records are realistic problems that often compromise accuracy of safety model outcomes. This paper proposes a new safety analysis framework where an optimal network design module that estimates the most-probable site for each crash is combined with the standard regression analysis. An effective solution algorithm based on Lagrangian relaxation is developed for the network design model, and an iterative computation approach is proposed for location estimation and statistical regression. The proposed models are implemented with empirical data and numerical results are presented.

Original languageEnglish (US)
Pages (from-to)202-209
Number of pages8
JournalAccident Analysis and Prevention
Issue number1
StatePublished - Jan 2009


  • Crash location error
  • Lagrangian relaxation
  • Network design model
  • Transportation safety analysis

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Safety, Risk, Reliability and Quality
  • Law
  • Human Factors and Ergonomics


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