@article{ref1,
title="The risks of driving on roadways with 50 miles per hour posted speed limit",
journal="Journal of safety research",
year="2005",
author="Dhungana, Prabhakar and Qu, Ming",
volume="36",
number="5",
pages="501-504",
abstract="Abstract unavailable.",
language="en",
issn="0022-4375",
doi="10.1016/j.jsr.2005.10.013",
url="http://dx.doi.org/10.1016/j.jsr.2005.10.013"
}