@article{ref1,
title="Highway risk management traffic control devices",
journal="ITE journal",
year="1980",
author="Ernest, H.",
volume="50",
number="1",
pages="18-22",
abstract="Subjects discussed deal with the laws relating to traffic control devices; inventory of devices; replacing devices at the end of the warranty life; and enforcing state traffic control device specifications and standards.<p />",
language="",
issn="0162-8178",
doi="",
url="http://dx.doi.org/"
}