Modern roundabouts reduce 75% of the conflicts at traditional 4-leg intersections, significantly improving the operations and safety of intersecting roadways. To promote the use of roundabouts the Federal Highway Administration has recently made them a key element of the Every Day Counts initiative to improve safety on roadways throughout the U.S. Since then, state DOTs and local agencies have increased their need for the development of modern roundabouts. This course will provide a fundamental overview to guide engineers in the development of modern roundabout designs.
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