@article{ref1,
title="Roundabouts : A State of the Art in Germany",
journal="Transportation research circular",
year="2005",
author="Brilon, Werner",
volume="2005",
number="E-C083",
pages="15p-15p",
abstract="Today, Germany has 15-years of experience with different kinds of modern roundabouts. In addition to that, large conventional roundabouts have been used for 70 years. Modern roundabouts include compact single-lane roundabouts with diameters between 26 and 40 m; mini-roundabouts with a traversable island and diameters between 13 and 25 m; and larger roundabouts (40 -60 m) with 2-lane access for cars and single-lane operation for trucks. All these types turned out to be very successful regarding both traffic safety and capacity. On the other side the traditional larger 2-lane roundabouts have significant safety problems. The paper describes the German experience from a long series of research projects regarding traffic safety, capacity, and traffic performance estimation as well as geometric design.<p />",
language="",
issn="0097-8515",
doi="",
url="http://dx.doi.org/"
}