Alternative Types of Roundabouts

This book presents a history of roundabouts, an introduction to their design, calculations of their capacity and traffic-safety features. It describes the key features of standard roundabouts and their limitations. Alternative types of roundabouts are a fairly recent development and have only been implemented in a few countries to date. The book illustrates a broad variety of these recent alternative types of roundabouts, as well as proposed types still in the development phase, explaining for each the specific needs it meets, its advantages and drawbacks. In closing, the book offers an outlook on the role of roundabouts in future street traffic.

• Depressed Lanes for Right Turn
• Dog-bone Roundabout
• Flower Roundabout
• Joint Splitter Island
• Target Roundabout
• Traffic Calming Circles
• Traffic Safety
• Transition Central Island
• Turbo Roundabout
• urban geography and urbanism
• landscape/regional and urban planning

• Faculty of Civil Engineering Department of Traffic Management, University of Maribor, Maribor, Slovenia

  Tomaž Tollazzi

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