@article{ref1,
title="Preemption of Traffic Signals at or Near Actively Protected Railroad Grade Crossings",
journal="ITE journal",
year="1995",
author="No Author(s) Listed, ",
volume="65",
number="2",
pages="45-",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0162-8178",
doi="",
url="http://dx.doi.org/"
}