When Yellow Means Stop: Deciphering RRFB Light Color

When Yellow Means Stop: Deciphering RRFB Light Color

The studies have proven it: rectangular rapid flashing beacons (RRFBs) work. Yield rates can be as high as 96% where RRFBs are installed. That’s a huge increase when yield rates are as low as 18% with a simple painted crosswalk. If RRFBs are working that effectively...
RRFB IA 21

RRFB IA 21

Learn What’s New in IA-21 vs. IA-11 On March 20, 2018, the Federal Highway Administration issued Interim Approval 21 – Rectangular Rapid-Flashing Beacons at Crosswalks in the Manual on Uniform Traffic Control Devices (MUTCD). The Basics IA-11 is no longer valid:...