@article{ref1,
title="Pavement, Bridge, Safety and Congestion Management Systems: A Need for A Clear Federal Vision",
journal="Transportation quarterly",
year="1993",
author="Hyman, W. A.",
volume="47",
number="2",
pages="151-165",
abstract="[No abstract available]  <p>Language: en</p>  <p></p>",
language="en",
issn="0278-9434",
doi="",
url="http://dx.doi.org/"
}