@article{ref1,
title="Differentiated rural speed limits: can this be done safely?",
journal="Proceedings of the Road Safety on Four Continents Conference",
year="2010",
author="Mertner, Jesper",
volume="15",
number="",
pages="705-716",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="",
doi="",
url="http://dx.doi.org/"
}