@article{ref1,
title="The conversion of four-lane undivided urban roadways to three-lane facilities",
journal="Transportation research circular",
year="2000",
author="Welch, Thomas",
volume="",
number="501",
pages="12 p.-12 p.",
abstract="In recent years, many traffic engineers have advocated converting four-lane undivided urban streets to three-lane two-way left-turn facilities. A number of these conversions have been successfully implemented. Accident rates have decreased while corridor and intersection levels of service remained acceptable. This conversion concept is yet another viable alternative &quot;tool&quot; to place in our urban safety/congestion toolbox.<p />",
language="",
issn="0097-8515",
doi="",
url="http://dx.doi.org/"
}