turbo roundabout

Turbo roundabouts in continental Europe were initially built with raised lane separators.

Several variations of the turbo roundabout exist.

Research and experiments show that traffic accidents are reduced by 72% on turbo roundabouts compared to multi-lane roundabouts, which have 12 points of conflict.

The turbo roundabout was formally developed in 1996 in the Netherlands by Lambertus Fortuijn, a researcher from the Delft University of Technology.

It is often the case that a turbo roundabout is marked out such that a U-turn by means of the roundabout is not possible for drivers approaching on certain arms.

In the Netherlands, Poland, Slovenia, Czech Republic, Hungary, Republic of Macedonia, Spain, Belgium and the United Kingdom, a relatively new type of roundabout is emerging, the turbo roundabout.