Introducing TED: Our new Transportation Enterprise Data program. This is a self-service resource for all things CTDOT. In a couple of clicks you’ll be able to get data and maps of Connecticut’s roadways, traffic volumes, crash data, and more. It’s a one stop shop for geospatial data. Visit us today!

Rectangular Rapid Flash Beacon (RRFB)

Rectangular Rapid Flash Beacons (RRFB) can enhance safety by reducing crashes between vehicles and pedestrians at uncontrolled approaches to unsignalized intersections and mid-block pedestrian crossings by increasing driver awareness of potential pedestrian conflicts. 

 Figure 1c - pedestrian (W11-2) sign with a downward diagonal arrow (W16-7P) supplemental plaque mounted below it. A rectangular rapid flashing beacon light bar is mounted between the sign and the plaque. The yellow rectangular indication on the left-hand side of the light bar is dark and the yellow rectangular indication on the right-hand side of the light bar is illuminated.

See the link for a brochure on RRFBs: Rectangular Rapid Flashing Beacons.

Towns interested in pursuing the installation of an RRFB on a State Route must submit an Encroachment Permit.  The following information will aid your submission


Pedestrian Countermeasures

Sample Plan - Solar Powered

Sample Plan - Hard Wired

Sample Special Provisions

Please click the link for additional information regarding the FHWA Interim Approval of Use for the RRFB.

The Interim Approval requires that a listing of all RRFB's be maintained.
- When an RRFB is added or removed, the municipality must complete the spreadsheet and send it to
Complete list of Statewide RRFBs
If you have any questions, you may contact our Traffic Engineering team at this link: