Abstract
In road traffic crashes, although rollover crashes account for a relatively low proportion, those result in a high fatality rate. The present study performed random parameters ordered logit models to examine risk factors as well as their heterogeneous effects on driver injury severity in single-vehicle passenger car and SUV rollover crashes. Crash data for the empirical analysis were extracted from Texas Crash Record Information System (CRIS) database during the year 2016. Model estimation results show that six variables (male drivers, drivers’ age, airbag deployment, failure to drive in single lane, speed limit, and rural area) were found to produce normally distributed parameters in passenger car model, while nine parameters (male drivers, safety belt use, airbag deployment, drug or alcohol use, failure to drive in single lane, improper evasive action, vehicle model year, friday, and rural area) in SUV model were found to be normally distributed. Several other factors with fixed parameters were found to be associated with driver injury severity in single-vehicle passenger car or SUV rollover crashes, most notably: ejection or partial ejection, turning left, intersection, August, adverse weather conditions, and night with light. These variables were significant in both models; most variables have stronger effects on nonincapacitating injury and serious injury outcomes in SUV than in passenger car rollover crashes. These findings provide a deep insight into causality nature and factor involved in driver injury severity in single-vehicle passenger car and SUV rollover crashes and are also helpful for transport agencies to determine appropriate countermeasures aimed at mitigating injuries sustained by drivers in single-vehicle rollover crashes.
Highlights
Road tra c accidents are the major cause of fatalities and injuries globally
A total of 14 safety factors were found to be signi cant in both models, such as male drivers, safety belt use, airbag deployment, ejection or partial ejection, drug or alcohol use, failure to drive in single lane, model year, speed limit, adverse weather conditions, rural area
Six parameters were found to be normally distributed in passenger car model, while nine variables were found to have a normally distributed parameter in sport utility vehicle (SUV) model
Summary
The World Health Organization released that nearly 1.25 million citizens died of road tra c crashes and nearly 50 million individuals su ering nonfatal injuries as a consequence of such accidents [1]. Among these accidents, a large number of automotive vehicle accidents lead to vehicle rollovers (e.g., in the United States, 18.9% fatal crashes involved rollovers during the year 2014) and rollovers are becoming one of the crucial safety threats in road tra c events [2]. In the State of Texas, US, rollover crashes made up 6.70% of all tra c accidents during the year 2016, while the death toll caused by rollovers were responsible for 14.98% of total fatalities [5]. ese statistics indicate that the number of casualties caused by rollovers is far from negligible, and the urgent need of taking in-depth insight into rollover crashes to mitigate their injury severity
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
