@article{ref1,
title="Fog detection and some effects of fog on motorway traffic",
journal="Traffic engineering and control",
year="1981",
author="Jeffery, DJ and White, M. E.",
volume="22",
number="4",
pages="199-203",
abstract="Two types of fog detectors, which were specially developed for roadside use, have been extensively tested. The paper summarizes the results obtained from the experiments, and the conclusions reached.   <p>Language: en</p>",
language="en",
issn="0041-0683",
doi="",
url="http://dx.doi.org/"
}