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Vehicle mass and injury risk in two-car crashes: a novel methodology

Tolouei, R, Maher, MJ and Titheridge, H (2013) Vehicle mass and injury risk in two-car crashes: a novel methodology. Accident Analysis and Prevention, 50. 155 - 166. ISSN 0001-4575


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This paper introduces a novel methodology based on disaggregate analysis of two-car crash data to estimate the partial effects of mass, through the velocity change, on absolute driver injury risk in each of the vehicles involved in the crash when absolute injury risk is defined as the probability of injury when the vehicle is involved in a two-car crash. The novel aspect of the introduced methodology is in providing a solution to the issue of lack of data on the speed of vehicles prior to the crash, which is required to calculate the velocity change, as well as a solution to the issue of lack of information on non-injury two-car crashes in national accident data. These issues have often led to focusing on relative measures of injury risk that are not independent of risk in the colliding cars. Furthermore, the introduced methodology is used to investigate whether there is any effect of vehicle size above and beyond that of mass ratio, and whether there are any effects associated with the gender and age of the drivers. The methodology was used to analyse two-car crashes to investigate the partial effects of vehicle mass and size on absolute driver injury risk. The results confirmed that in a two-car collision, vehicle mass has a protective effect on its own driver injury risk and an aggressive effect on the driver injury risk of the colliding vehicle. The results also confirmed that there is a protective effect of vehicle size above and beyond that of vehicle mass for frontal and front to side collisions.

Item Type: Article
Copyright, Publisher and Additional Information: © 2012, Elsevier. This is an author produced version of a publsihed in Accident Analysis and Prevention. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: Two-car collisions; driver injury risk; secondary safety; vehicle mass; velocity change
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Environment (Leeds) > Institute for Transport Studies (Leeds)
Depositing User: Symplectic Publications
Date Deposited: 28 May 2012 08:56
Last Modified: 12 Nov 2015 09:44
Published Version: http://dx.doi.org/10.1016/j.aap.2012.04.005
Status: Published
Publisher: Elsevier
Identification Number: 10.1016/j.aap.2012.04.005
URI: http://eprints.whiterose.ac.uk/id/eprint/43781

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