@article{ref1,
title="The effects of media messages, police enforcement and road design measures on speed choice",
journal="IATSS research",
year="1997",
author="Rothengatter, Johannes Albertus Talib",
volume="21",
number="1",
pages="80-87",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0386-1112",
doi="",
url="http://dx.doi.org/"
}