@article{ref1,
title="Assessing Traffic and Emergency Benefits of Railroad Grade Separations",
journal="Journal of transportation engineering",
year="1987",
author="Easa, Said M. and Mccoll, DR",
volume="113",
number="6",
pages="593-608",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0733-947X",
doi="",
url="http://dx.doi.org/"
}