@article{ref1,
title="The traffic conflicts technique applied to rural intersections",
journal="Accident analysis and prevention",
year="1970",
author="Campbell, R. E. and Ellis King, L",
volume="2",
number="3",
pages="209-221",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0001-4575",
doi="",
url="http://dx.doi.org/"
}