TRB Webinar: Turbo-charged – Turbo roundabout advancements

January 29, 2020 02:00 PM - 03:30 PM U.S. Eastern
Cost (for your seat)
Professional Development Hours for this webinar
1.50 hour(s)
Continuing Education Hours for this webinar
AAE: 0.00 hour(s)
AICP: 0.00 hour(s)
CLE: 0.00 hour(s)

What’s the difference between a traditional roundabout and a turbo roundabout? TRB is hosting a webinar on Wednesday, January 29, 2020 from 2:00 to 3:30 ET to answer this question. A turbo roundabout has the same operating characteristics as modern roundabouts but utilizes different geometrics to address the conflicts associated with the common crash types in multilane roundabouts. This webinar will discuss international experiences with turbo roundabouts and identify key considerations for U.S. implementation. The content is based on a technical summary by the U.S. Federal Highway Administration (FHWA).

This webinar was organized by the TRB Standing Committees on Operational Effects of Geometrics and Geometric Design.

Some registrants will need to pay $105 to attend this webinar. Sign into to view registration information.

Webinar Presenters

  • Letty Schamp, City of Hilliard, Ohio
  • Brian Moore, Arcadis
  • Jaap Tigelaar, Arcadis
  • RJ Porter, VHB

Moderated by: Mark Doctor, FHWA

Webinar Outline

  1. Introduction and motivation
  2. International turbo roundabout experience
  3. Considerations for implementation in the U.S.
    • Geometric design
    • Multimodal user considerations
    • Safety performance
    • Capacity and traffic operational performance
    • Public outreach
  4. Question and answer session

The first 60 minutes of the webinar will be for presentations and the final 30 minutes will be reserved for audience questions.

Learning Objectives

At the end of this webinar, participants will be able to:

  • Describe the multilane roundabout crash patterns that prompted implementation of turbo roundabouts
  • Describe the geometric and operational characteristics of turbo roundabouts
  • Identify public outreach strategies for turbo roundabouts
  • Locate available resources to inform turbo roundabout implementation in the U.S.

Professional Development Hour Information

A certificate for 1.5 Professional Development Hours (PDHs) will be provided to Professional Engineers (PEs) who register and attend the webinar as an individual. For approved webinars, TRB’s webinar program awards Registered Continuing Education Provider (RCEP) Professional Development Hour (PDH) credits associated with participation only to the registered individual and not to other members of a group that view the webinar together. To receive PDH credits, please register as an individual and sign into the webinar from your personal computer. After doing this, you may join your group in a meeting room. To be eligible for the credits, individuals must remain signed in for the entire webinar, including for any question and answer session following the presentations.

In addition, advance registration is available until just before the webinar starts. Once the webinar starts, you will be unable to submit your registration. Individuals that are registered for a webinar but do not receive their confirmation emails due to their organization’s internal firewalls should contact the TRB Helpdesk ( for assistance in signing in.

Individuals registered as Florida PEs are no longer required to email TRB with your license number to report your attendance. Instead, please use your certificate that TRB provides through as verification of your attendance to the Florida Board of Professional Engineers.

Please check with your licensing board to ensure that TRB webinar PDHs are approved by your board.

This webinar was developed in October 2019. TRB has met the standards and requirements of the Registered Continuing Education Program (RCEP). Credit earned on completion of this program will be reported to RCEP by TRB. Complaints about registered providers may be sent to RCEP, 1015 15th Street, NW, 8th Floor, Washington, DC 20005. Website:

Registration questions? Contact Reggie Gillum at