@article{ref1,
title="Chicago's Accident Experience on Arterials and Expressways",
journal="Traffic quarterly",
year="1960",
author="Hoch, I",
volume="14",
number="3",
pages="340-362",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0041-0713",
doi="",
url="http://dx.doi.org/"
}