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Citation
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Choo YIL, Kim OH, Lee KH, Kong JS, Kang GW, Kim SC, Shin KS. 27th International Technical Conference on the Enhanced Safety of Vehicles (ESV); April 3-6, 2023; Abstract #: 23-0130, pp. 9p. Washington, DC USA: US National Highway Traffic Safety Administration, 2023 open access. |
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Abstract
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27th International Technical Conference on the Enhanced Safety of Vehicles (ESV): Enhanced and Equitable Vehicle Safety for All: Toward the Next 50 Years
https://www-esv.nhtsa.dot.gov/Proceedings/27/27ESV-000130.pdf
Side pole collision is the most devastating road traffic injury (RTI) that causes death or severe injuries among side collisions. Since pole-type materials have a relatively narrow width and fixed rigidity, side pole collisions cause severe deformation and consequent intrusion resulting in direct contact with the occupants. This study aimed to investigate the risk factors that contributes to a severe injury of motor vehicle occupants (MVOs) in side pole collisions. This study used the Korea In-Depth Accident Study (KIDAS) database collected from 2011 to April 2020. Among the total data, the authors analyzed 392 patients who were engaged in side collisions by excluding multiple collisions and rollovers. The collision type was classified into pole and non-pole (i.e., vehicle-to-rigid wall) collisions within a single collision. Moreover, they classified the collision severity according to the amount of crush extent (CE) zones. In this study, the incidence of non-pole collisions (n=362, 92.35%) was nearly 12 times higher than pole-related collisions (n=30, 7.65%). Factors affecting severe injuries showed statistical significance in the collision object (p<0.001), seat location (p=0.001), and CE zone (p<0.001). However, passive safety devices, such as seatbelts and airbags, showed no significance. In the case of side collision objects, there were statistical differences between the chest (p=0.004), pelvis, and extremities (p=0.016) between pole and non-pole side collisions. Particularly, The highest risk of severe injury had dramatically increased since the amount of CE zones was higher (odds ratio OR, 9.604; confidence interval, 3.739-24.672). MVOs colliding with pole structural materials had the risk of severe injury (ISS16+) in side collisions (OR, 5.285; 95% CI, 1.358-20.571). Compared with the far-side occupant, the near-side occupant had increased risk of severe injury (OR, 3.123; 95% CI, 1.438-6.783). In this study, factors affecting severe injuries in side collisions were identified as the collision object, seat location, and crush extent. In frontal and rear-end collisions, it is necessary to seek weakness of crashworthiness caused by the lack of structural performance (e.g., bumpers, engine room, truck leads) to protect occupants from collision capacity in side pole collisions. In conclusion, an increase in vehicular extent also leads to a risk of intrusion, resulting in a severe injury to near side occupants. In contrast with frontal collisions, both side parts of the vehicle have a relatively low range of capacity to absorb the collision. It is difficult to evaluate severe injury of occupants after a collision at the scene. Proper evaluation on scene can improve the occupant's prognosis.
Language: en |