@article{ref1,
title="Effect of shoulder width on accidents on two-lane tangents",
journal="Highway Research Board bulletin",
year="1954",
author="Belmont, D. M.",
volume="91",
number="",
pages="29-32",
abstract="California accident records for 1948 were examined for the relation between shoulder width and accident occurrence on two-lane tangents. For similar traffic volumes, shoulders 6 feet wide were safer than narrower shoulders and, also, (at volumes over 5,000 vehicles per day) safer than wider shoulders.<p />",
language="",
issn="0073-2206",
doi="",
url="http://dx.doi.org/"
}