Applied Roundabout Design

About the Course

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 below. The cost for this two-day Roundabout course is $395. This fee includes all classroom materials, coffee and pastries each morning, as well as snacks and beverages in the afternoon. Participants will be responsible for their own lunch. Please fill out the form to the right and click "Submit RSVP" which will guide you through the registration and payment process.

About the Location

KAI in partnership with Oregon Transportation & 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.

If interested, out of town guests can stay at the University Place Hotel (where the class is held) for the heavily discounted rate of $79 night (plus taxes, etc.). To receive this discount, mention the "PSU Friends and Family" rate when booking your accommodations. Otherwise, you may find the Portland Oregon Visitors Association (POVA) website handy for making lodging arrangements and other general information about the city.

If you have additional questions about the course, please contact one of the instructors below at (503) 228-5230.

About the Instructors

Brian L. Ray, PE
Principal Engineer, Kittelson & Associates, Inc., Portland, OR

Brian offers 25 years experience in transportation planning and roadway design. He has performed transportation planning studies for a variety of corridor evaluations, transportation system plans, and environmental review documents across the United States. His design experience includes developing and evaluating conceptual alternatives for freeway, highway, and arterial street systems. His arterial experience includes conventional and modern roundabout intersection design. He has completed planning projects for downtown circulation evaluations, institutional master plans, and regional transportation analyses. He chairs the Transportation Research Board (TRB) Committee on Geometric Design. He routinely conducts training courses on Roadway Geometric Design, Modern Roundabouts, and context sensitive solutions.

Wade E. Scarbrough, PE
Associate Engineer, Kittelson & Associates, Inc., Portland, OR

Wade is an Associate Engineer with Kittelson & Associates and has nearly 15 years of experience in transportation engineering and planning. He was a co-author of the first edition of the FHWA publication Roundabouts: An Informational Guide, and he has been active in a review role working together with the team of international experts developing the 2nd Edition of the Guide. He has been particularly focused on the Geometric Design and Traffic Design chapters and has been involved in developing many of the guidelines and design graphics for both the Roundabout Guide as well as the 2009 MUTCD. Wade has also prepared concept design studies, preliminary design plans, final geometric layouts, and traffic design plans for roundabouts at over fifty intersection sites worldwide. Wade is also an experienced analyst and designer of other transportation facilities, including freeway interchanges, arterial corridors, signal systems, neighborhood streets, and conventional at-grade intersections.

Chris Tiesler, PE
Senior Engineer, Kittelson & Associates, Inc., Portland, OR

Chris is currently serving as a key team member for NCHRP Project 3-65a to develop the second edition of FHWA’s Roundabouts: An Informational Guide. Mr. Tiesler has served an integral role in numerous roundabout projects throughout the country involving the preliminary design of single and multi-lane roundabouts, developing conceptual design alternatives, and providing geometric design assessment of roundabout plans with regard to safety, multi-modal use and system wide considerations.

About Cancellation

You may cancel your registration up to one (1) week prior to class dates. If you are unable to attend, someone else from your agency or firm may attend in your place. To cancel, please email Dave Mills.

KAI reserves the right to cancel the class if minimum participation levels are not met for the facility. You will be notified at least (1) week prior to the start of the course in the event that the class is cancelled. A full refund for the amount of the course will be given to registered participants. No other costs are covered under this cancellation policy.

Event Materials