@article{ref1,
title="Estimates of car-following distances on three types of two-laned roads",
journal="Human factors",
year="1976",
author="Harte, M. R. and Harte, D. B.",
volume="18",
number="4",
pages="393-395",
abstract="Abstract unavailable.",
language="",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}