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Design of Modern Roundabouts - Online Workshop

May 2 & 3, 2023

(9:30 am - 12:30 pm Eastern Time)


6 Professional Development Hours can be granted for this course. No partial credit available. Attendees must attend at least 90% of the workshop to get 6 PDHs.

Register ONLINE here.


Register by fax or mail. Click here to download the brochure.


Roundabouts have been successfully employed throughout the world for many years to provide safe and efficient intersection operations. In the United States we have been slow to understand the advantages of such intersections, as in 1995 there were only about one dozen roundabouts in the entire country. Today, however, roundabouts have become very popular, with their number growing to over 2300. The primary purpose of this course is to increase the understanding and awareness of the many advantages of roundabouts, and thereby to increase their popularity and usage. This will be accomplished by discussing roundabout operational and safety advantages, with a focus on the conditions where roundabouts are the preferred solution, and to present the fundamental design principles. This will include discussion of roundabout geometric design elements, associated roadway design considerations, and the basic design checks and measurements.

Upon completion of the course, the participants will possess a fundamental understanding of:

  • the different types of rotary intersections and their uses
  • the advantages of modern roundabouts
  • roundabout general design principles and considerations
  • roundabout design elements, design checks and measurements
  • roadway design considerations for roundabouts
  • other roundabout related design considerations
  • including pedestrian and bicycle provisions, signing and pavement marking, street lighting, and landscaping


This course is appropriate for local and state government engineering, planning and public works employees, consulting personnel, and others involved in the evaluation and design of roadway and intersection improvements. The workshop material will serve as an excellent source of current information for people with different levels of experience and participation in the subject matter, and could even prove valuable for administrators, politicians and others whose involvement is more at the policy and/ or decision making levels.


Alan L. Childers, P.E.
Mr. Childers, P.E., is a Senior Transportation Engineer for the engineering firm of Cannon & Cannon, Inc., located in Knoxville, Tennessee. He holds B.S. and M.S. degrees in Civil Engineering from the University of Tennessee, and has over forty years experience in Traffic Engineering and Roadway Design, with both public and private agencies. Mr. Childers has also served as an Adjunct Assistant Professor with the University of Tennessee Department of Civil Engineering, teaching Transportation Engineering and Geometric Design Courses.


The Tennessee Academy for Transportation Engineering (TATE) is an educational Program providing continuing education for engineers, planners, designers and technicians. The program focuses on the basic design of transportation facilities, the evaluation of traffic operations, and the collection of data to support various transportation studies. Successful completion of the required curricula of core and elective courses, confers TATE certification. For more information, contact Airton Kohls at 865-974-5255.


This is a free workshop for all city or county employees. Pre-registration is required. The registration fee for other attendees is $120 per person. TDOT employees must register through their local TDOT Training Office at least 10 working days in advance. Please note your employment status on the registration form. A course may be canceled if there is low enrollment. Forty-eight hours notice will be given to registrants if a course is canceled.. Register early! Limited enrollment!

Register ONLINE here.


Register by fax or mail. Click here to download the brochure.