Roles of vehicle footprint, height, and weight in crash outcomes: application of a heteroscedastic ordered probit model

摘要: This study used a heteroscedastic ordered probit model to distinguish the effects of vehicle weight, footprint, and height on the severity of injuries sustained by vehicle occupants while controlling for many occupant, roadway, and other characteristics. Model results suggest that the impact of physical vehicle attributes on crash outcomes depends on the number of vehicles involved and is typically more significant in one-car crashes than in two-car crashes. Although vehicles with larger footprints and shorter vehicles were estimated to …