While full-sized roundabouts are a proven solution for addressing safety and mobility at intersections, their costs have risen relative to other intersection control types, prompting interest in lower-cost alternatives. TRB will host a webinar on Thursday, June 25, 2026 from 11:00 AM to 12:30 PM Eastern that will explore how highway agencies are planning, designing, and implementing mini and modular roundabouts as cost-effective intersection solutions. Presenters will highlight mini roundabout use on higher-speed rural roadways and near schools, where they can efficiently manage peak traffic flows and improve safety. Presenters will also examine the limited but growing use of modular roundabouts, including the contexts in which they have been deployed and the challenges affecting broader adoption.
This webinar is based on NCHRP Project 20-68, Domestic Scan 23-01: Experiences in the Use of Mini and Modular Roundabouts by Highway Agencies.
This webinar is sponsored by TRB’s National Cooperative Highway Research Program.
The registration fee is $100. Purchase a webinar package for discounted pricing. Complimentary registration is available for employees of TRB sponsors, standing technical committee chairs, involved CRP panel members, media, congressional staff, and TRB or National Academies staff. Visit MyTRB.org for details.
A recording will be sent to all registrants after the webinar.
Webinar agenda and presenters
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:
Professional Development Hours
Professional engineers (PEs) who register and attend the entire webinar as an individual will be awarded 1.5 Professional Development Hours (PDHs). TRB’s webinar program awards PDH credits only to the registered individual, and not to other members of a group that view the webinar together. 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.
This webinar will be delivered as a scheduled – e-learning live event and is categorized within RCEP as Technical, Health and Safety.
Please check with your licensing board to ensure that TRB webinar PDHs are approved by your board.
TRB will report credits earned to the Registered Continuing Education Program (RCEP). Complaints about registered providers may be sent to RCEP, 1015 15th Street, NW, 8th Floor, Washington, D.C., 20005.
American Institute of Certified Planners Certification Maintenance Credits
This webinar is approved by the American Planning Association (APA) for 1.5 Certification Maintenance (CM) Credits. CM credits provide continuing education opportunities for AICP Certified Planners to continue their professional skills and knowledge. To receive CM credits, Certified Planners should visit the TRB event webpage on American Planning Association and register their participation.
Please make sure that you register for this session and log in using the link that TRB provides to your email account. We use this as your record that you attended this session. TRB only maintains the records of attendees who use their email address to log into the webinar and cannot verify attendance of individuals who view the webinar without personally logging into the session.
If you have problems reporting your CM credits or have general questions about the CM program, please contact AICPCM@planning.org.
Pre-registration is required. Once the webinar starts, you will be unable to register. Individuals that are registered for a webinar but do not receive their confirmation emails due to their organization’s internal firewalls should contact TRB Helpdesk for assistance in signing in.
View our FAQ page for more information.
Registration questions? Contact TRB webinar program.
