Rectangular Rapid Flashing Beacons

October 30, 2018


In March 2018, the Federal Highway Administration (FHWA) issued a new Interim Approval (IA-21) for the use of rectangular rapid flashing beacons (RRFBs). This webinar walked participants through the specifics of IA-21, focusing on the terms and conditions for installing new RRFBs. This was followed by a short overview of when and where to install RRFBs, as well as a discussion period in which panelists responded to questions submitted by participants.

This webinar supports FHWA's Safe Transportation for Every Pedestrian (STEP) program which promotes countermeasures at uncontrolled pedestrian crossings.


  • Duane Thomas, Federal Highway Administration
  • Megan McCarty Graham, Toole Design Group

Webinar Resources