OTREC Events

Modeling Injury Outcomes of Crashes involving Heavy Vehicles on Texas Highways

January 24, 2014 12:00 pm - January 24, 2014 1:00 pm

Where: Room 204 of the Distance Learning Center Wing of the Urban Center at PSU
Speaker: Salvador Hernandez, Oregon State University
Topic: Modeling Injury Outcomes of Crashes involving Heavy Vehicles on Texas Highways
Summary: A growing concern related to large-truck crashes has increased in the State of Texas in recent years due to the potential economic impacts and level of injury severity that can be sustained. Yet, studies on large truck involved crashes highlighting the contributing factors leading to injury severity have not been conducted in detail in the State of Texas especially for its interstate system.  In this study, we analyze the contributing factors related to injury severity by utilizing Texas crash data based on a discrete outcome based model which accounts for possible unobserved heterogeneity related to human, vehicle and road-environment. We estimate a random parameter logit model (i.e., mixed logit) to predict the likelihood of five standard injury severity scales commonly used in Crash Records Information System (CRIS) in Texas – fatal, incapacitating, non-incapacitating, possible, and no injury (property damage only). Estimation findings indicate that the level of injury severity outcomes is highly influenced by a number of complex interactions between factors and the effects of the some factors can vary across observations. The contributing factors include drivers’ demographics, traffic flow condition, roadway geometrics, land use and temporal characteristics, weather, and lighting conditions.

Stream the seminar live, or watch an archived video, when made available, through the link here.

Image by JP Fagerback
 
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