@article{ref1,
title="Guardrail end types, vehicle weights, and accident severities",
journal="Journal of transportation engineering",
year="1996",
author="Gattis, JL and Alguire, MS and Narla, SRK",
volume="122",
number="3",
pages="210-214",
abstract="A study of guardrail end accidents on the Oklahoma State Highway System (1988-91) examined the severity of exposed and turned-down guardrail end accidents in relation to the type of end, vehicle weight, and vehicle rolling and/or vaulting. The data showed that lightweight vehicles and turned-down ends were associated with increased rolling and/or vaulting. Rolling and/or vaulting was associated with increased accident severity. A direct interaction among end-type, vehicle weight, and accident severity was not present; however, the interaction among end-type, vehicle weight, and rolling/vaulting was statistically significant. In terms of the resulting injury and death, the overall performance of the turned-down ends was no better than the exposed ends that they had replaced.<p />",
language="",
issn="0733-947X",
doi="",
url="http://dx.doi.org/"
}