@article{ref1,
title="Traffic signal change and clearnce intervals: research still needed",
journal="ITE journal",
year="2020",
author="Lindley, Jeff A.",
volume="90",
number="4",
pages="32-33",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0162-8178",
doi="",
url="http://dx.doi.org/"
}