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 the late 1990's as a safer and more efficient alternative to the standard multi-lane roundabouts.

describe the characteristics of turbo roundabouts, highlighting the design and traffic control features, operational capabilities, and potential safety benefits of these roundabout alternatives. 1 A 2 x 2 roundabout is characterized by two entry lanes approaching two circulating lanes.

turbo roundabouts are adaptable to the U.S. context, providing an effective roundabout solution for higher-volume intersections. The goal of this document is to synthesize existing published resources (e.g., reports, papers, presentations, videos, and tools) on

Learn about the flexibility and unique features that make TORUS the most sophisticated and dynamic roundabout design software. As turbo-roundabouts spread throughout the world as an alternative to standard multi-lane roundabouts, new design software will be needed to handle the growing demand.

Turbo roundabouts are multi-lane roundabouts with spiral road markings and with entry and circulating lanes separated by raised lane-dividers. The Turbo Roundabout was introduced in the Netherlands to solve capacity and safety issues that often occur in …

Jan 9, 2024 · Research suggests turbo roundabouts lead to fewer conflicts (down 50% compared to two lane alternatives) and increased capacity (45% more traffic can be handled on average). Moreover, they serve to decrease congestion and vehicle speeds alike.

The turbo roundabout design is given as an example [102] in the federal Manual on Uniform Traffic Control Devices. Sub-sea roundabouts. A new development is the roundabout below the seabed, in locations where multiple undersea traffic tunnels join.

Like traditional roundabouts, turbo roundabouts are one-way circular intersections where vehicles move counterclockwise around a central island. There are no traffic signals or stop signs so vehicles can flow continuously through the intersection.

Turbo roundabouts decrease congestion and increase safety, which is ever important in a popular and touristic place such as the Okanagan Valley. Why does Canada need Turbo roundabouts? It all comes down to safety. Roundabouts in general …

The turbo-roundabout has specific design characteristics, which make this type of roundabout unique: Nested spiral lane at one or more entries. Yield to no more than two lanes (deviation might be possible).