@article{ref1,
title="Review of usage and effectiveness of advisory speeds",
journal="ITE journal",
year="1978",
author="",
volume="48",
number="9",
pages="43-46",
abstract="Institute of Transportation Engineers Technical Council Committe 41-M surveyed 40 states to determine the state-of-the-art regarding the use of advisory speeds and the effectiveness of the displays. This article summarizes the committee's full report.<p />",
language="",
issn="0162-8178",
doi="",
url="http://dx.doi.org/"
}