Modelling traumatic brain injury in pedestrian involved in backover collisions Online publication date: Wed, 02-Sep-2020
by Atsutaka Tamura; King H. Yang
International Journal of Vehicle Safety (IJVS), Vol. 11, No. 3, 2020
Abstract: Backover collisions causing Traumatic Brain Injuries (TBIs) are underreported, and its severity may have been overlooked and underestimated. We conducted a series of pedestrian impact simulations involving backover collisions with a reversing vehicle, at a low speed of 10 km/h, to determine the risk of sustaining severe TBIs. Our modelling studies revealed a significant risk despite the 'moderate' impact configuration applied. By systematically performing injury analyses based on selected mechanical parameters, we found that TBI risk involved in primary head strike with a striking vehicle was almost negligible because of the low-speed collision, but significant injuries result from ground impact. Our study also demonstrated that pedestrians are potentially at a greater risk for TBI when struck by a Sport Utility Vehicle (SUV) than a conventional sedan, because the impact energy would be effectively transmitted from the SUV via its flat rear surface with a steep angle.
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