Ourston Roundabout Engineering, Inc. is North America’s pre-eminent roundabout design team. We have designed safe, high-capacity roundabouts in demanding locations since 1984. We collaborate with other professionals, including Barry Crown of the United Kingdom, to design roundabouts to relieve traffic congestion, achieve high capacity, increase safety, slow high-speed roads, and upgrade freeway-to-street interchanges.

We led the Roundabout Revolution in the U.S. with several design accomplishments:

• The first two modern roundabouts (Las Vegas, Nevada, 1990).

• Maryland's first roundabouts (Lisbon and Gaithersburg, 1993).

• The first three roundabout interchanges (Vail and Avon, Colorado, 1995 and 1997).

• America's first string of roundabouts to eliminate congestion (Avon, Colorado, 1997).

We helped the states of California, Florida, Kansas, Maryland, Michigan, and Wisconsin begin their roundabout programs. We have also written several articles on roundabouts, produced four roundabout videos, and wrote the design manual Roundabout Design Guidelines.

In Canada we are known as
Ourston Roundabouts Canada.