A Spatial Generalized Ordered Response Model to Examine Highway Crash Injury Severity

dc.creatorCastro, Marisolen
dc.creatorPaleti, Rajeshen
dc.creatorBhat, Chandra R.en
dc.date.accessioned2013-08-23T15:16:33Zen
dc.date.available2013-08-23T15:16:33Zen
dc.date.issued2013en
dc.description.abstractThis paper proposes a flexible econometric structure for injury severity analysis at the level of individual crashes that recognizes the ordinal nature of injury severity categories, allows unobserved heterogeneity in the effects of contributing factors, as well as accommodates spatial dependencies in the injury severity levels experienced in crashes that occur close to one another in space. The modeling framework is applied to analyze the injury severity sustained in crashes occurring on highway road segments in Austin, Texas. The sample is drawn from the Texas Department of Transportation (TxDOT) crash incident files from 2009 and includes a variety of crash characteristics, highway design attributes, driver and vehicle characteristics, and environmental factors. The results from our analysis underscore the value of our proposed model for data fit purposes as well as to accurately estimate variable effects. The most important determinants of injury severity on highways, according to our results, are (1) whether any vehicle occupant is ejected, (2) whether collision type is head-on, (3) whether any vehicle involved in the crash overturned, (4) whether any vehicle occupant is unrestrained by a seat-belt, and (5) whether a commercial truck is involved.en
dc.description.departmentCivil, Architectural, and Environmental Engineeringen
dc.identifier.citationCastro, M., R. Paleti, and C.R. Bhat (2013), "A Spatial Generalized Ordered Response Model to Examine Highway Crash Injury Severity,"Accident Analysis and Prevention, Vol. 52, pp. 188-203.en
dc.identifier.issn0001-4575en
dc.identifier.urihttp://hdl.handle.net/2152/21111en
dc.language.isoengen
dc.publisherElsevieren
dc.source.urihttp://www.journals.elsevier.com/accident-analysis-and-prevention/en
dc.subjecthighway crash injury severityen
dc.subjectgeneralized ordered response modelen
dc.subjectunobserved heterogeneityen
dc.subjectspatial dependenceen
dc.subjectcomposite marginal likelihooden
dc.subjectspatial econometricsen
dc.titleA Spatial Generalized Ordered Response Model to Examine Highway Crash Injury Severityen
dc.typeArticleen

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