Advanced air-control measures in public transportation are necessary, as buses can be high-risk environments for the spread of airborne diseases. TRB hosted a webinar on Thursday, April 10, 2025 from 2:00 PM to 3:30 PM Eastern that will explore effective strategies to mitigate the transmission of airborne viruses in bus cabins. Presenters shared insights from experimental and simulation studies on bus cabin air circulation, evaluating the effectiveness of various mitigation methods. Attendees heard both immediate response methods for outbreaks and long-term engineering solutions for prevention.

This webinar is based on Executive Summary: Strategies to Mitigate Exposure to Airborne Diseases for Public Transportation Passengers and Employees.

This webinar is sponsored by TRB’s Transit Cooperative Research Program.

The slides are linked in the meeting materials. View the recorded webinar below.

Webinar agenda and presenters

1. Experimental results – Heejung Jung, University of California, Riverside

2. Computer simulation results – Jacob Swanson, Minnesota State University, Mankato

3. Question and answer session moderated by Brenda Lopez, University of California, Davis

Learning Objectives

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

1. Reduce exposure to airborne viruses in public transportation

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 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.