Applied Roundabout Design Course

December 31, 1969 4:00 pm - December 31, 1969 4:00 pm

Circular intersection forms have been part of the transportation system in the United States for over a century. Their widespread usage decreased after the early 1960s. The advantages of the modern roundabout, including modified and improved design features, have again been recognized, more fully explored, and put to the test in the United States.

The instructor experts for this course will present the findings and guidelines relative to the development and design of the modern roundabout. They will highlight the distinct differences between the older traffic circle and rotary designs and the new design features. They will also address the typical questions of why, where, when, and how a roundabout design should be considered as an appropriate intersection solution.

This interactive course reviews the planning phase of a roundabout, the operational analysis steps, and detailed design guidelines. The planning phase focuses on where roundabouts should be considered and which issues are inherent in the design and operation. The operational analysis covers the detailed performance of a roundabout and typical measures of effectiveness, such as capacity, delay, and queues. The design phase includes issues related to size, horizontal and vertical alignment, transit, pedestrians, bicyclists, signing, and striping. Throughout the course, you will have the opportunity to ask questions of the instructors and discuss a wide variety of current topics in the roundabout field.

The basis for the course is the FHWA document, Roundabouts: An Informational Guide, and its forthcoming Second Edition (NCHRP Report 672); Kansas DOT and other State supplements to the FHWA guide; ongoing instructor involvement in NCHRP research and TRB, ITE, NCUTCD, and IESNA committees; and the instructors' practical experience in implementing roundabouts.

The course will be taught by experts in the area of Roundabouts from Kittelson & Associates, Inc. (KAI). You’ll find details about the instructors and registration information here. KAI in partnership with the Oregon Transportation Research and Education Consortium (OTREC), will facilitate the session at Portland State University. The class will be held in the Astoria Room at the University Place Conference Center.

For more information, call Kittleson & Associates at 503-228-5230.

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