Safety Challenges with
Turbo Roundabouts

As turbo roundabouts gain popularity as an alternative to standard multi-lane roundabouts, new design software will be needed to handle the growing demand.

To fulfill the needs of transportation engineers and designers, Transoft Solutions TORUS Roundabouts is a roundabout design software that applies the knowledge and experience of vehicle movements to the design and construction of efficient road infrastructures. Powered by the trusted AutoTURN engine, TORUS uses the patented vehicle envelope method of design to generate roundabout geometry with vehicle swept paths.

What is a Turbo
Roundabout?

A turbo roundabout is a relatively new type of roundabout, which provides a spiraling flow of traffic, requiring drivers to choose their direction before entering the roundabout. Professor L.G.H. Fortuijn first introduced it in the late 1990’s as a safer and more efficient alternative to the standard multi-lane roundabouts.

The first turbo roundabout was built in the Netherlands in 2000 and soon became so popular that the Dutch government developed its own design guidelines. As of today, there are nearly 300 turbo-roundabouts in the Netherlands.

Turbo Roundabouts in
the World

Over the last decade, turbo roundabouts have spread outside of the Netherlands – mostly in Eastern Europe and in North America. While some countries strictly applied the Dutch model for turbo roundabout design, others built them on experimental sites, resulting in region-specific geometrical variations. Today, we count 390 turbo roundabouts worldwide.