Radar Speed Sign Application Guide

Radar Speed Sign Application Guide

Use this visual guide for the most common radar speed sign applications on your streets, including recommendations for: Placement and detection of radar speed signs based on driver perception/reaction ranges at various speeds Sign legibility at various speeds and...
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...
FHWA terminates interim approval of RRFBs in the United States

FHWA terminates interim approval of RRFBs in the United States

UPDATE: March 22, 2018 Carmanah has purchased and disclaimed all patents on the RRFB, allowing the FHWA to reinstate it as an interim-approved product; the RRFB may be installed by following Interim Approval 21. See our press release for details. LEARN YOUR NEXT STEPS...