@article{ref1,
title="Traffic operations and driver performance as related to various conditions of nighttime visibility",
journal="Highway Research Board bulletin",
year="1962",
author="Huber, Matthew J.",
volume="336",
number="",
pages="37-50",
abstract="Dark adaptation and critical flicker fusion thresholds division of the minnesota highway department and a manufacturer of highway sign materials conducted a joint field study of an experimental reflectorized color guidance system installed in the cloverleaf interchange at the intersection of us 61 and minn 36. This is a report of the experimental results of traffic surveys and driver interviews made for the study. A description of the reflectorized system is included.<p />",
language="",
issn="0073-2206",
doi="",
url="http://dx.doi.org/"
}