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Position and rotation of driver's head as risk factor for whiplash in rear impacts

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journal contribution
posted on 30.06.2015 by James Lenard, Karthikeyan Ekambaram, Andrew Morris
Evidence suggests that head position increases risk of whiplash injury to vehicle occupants in rear impacts. The aims of this study were to collect exposure data on head position and rotation during naturalistic driving and to express this in the form of a parametric statistical model for use in computer simulations to optimize seat design for neck injury prevention. An instrumented vehicle equipped with an eye-tracker was used to collect digital readings that were complemented with a four-track video recording. Data from driving trials (approximately 30-60 minutes) were analyzed when the vehicle was stopped, stopping or moving slowly as these are thought to be manoeuvres where impact and hence neck injury risk is highest. It was found that the ‘t location-scale’ distribution provided best fit to the experimental data and that the measured interquartile range or central 50% of head movement in such manoeuvres was approximately ± 15 mm lateral, ± 10 mm longitudinal and ± 7.5 degrees left-right rotation. These ranges provide guidance on the degree of biofidelity required in computer simulation models. Further analysis showed that out-of-range head rotation and rapid rotation explained the majority of missing digital readings and these two motions should therefore be modeled separately as elements of the parametric model.

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Published in

J Ergonomics

Volume

3

Issue

12

Citation

LENARD, J.A. ... et al, 2015. Position and rotation of driver's head as risk factor for whiplash in rear impacts. Journal of Ergonomics, 3 (12), doi: 10.4172/2165-7556.S3-012

Publisher

OMICS Group (© 2015 Lenard J, et al)

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/ by/4.0/

Publication date

2015

Notes

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

ISSN

2165-7556

Language

en

Licence

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