About those Florida East Coast (FEC) train horns: the FEC responds

The FEC responds with a Q&A on their website. The FEC also provides this brief summary:

Florida East Coast Railway (FECR) took delivery of 24 new GE locomotives in December 2014. These new, state of the art locomotives are more fuel efficient and cleaner environmentally than previous locomotives. The locomotives are used exclusively for FECR trains that operate between Jacksonville and South Florida. When initial noise complaints were received, FECR had GE test the new locomotive horns to ensure they were within the compliance range required by the Federal Railroad Administration (FRA). The test confirmed the horns were compliant and actually were found to be at a slightly lower decibel (db) level than the previous locomotive horns. While the new locomotives are compliant, FECR contacted the manufacturer to determine what differences there were between the new horns versus the horns on the old locomotives. Further, the FRA has decided to test the horns and their testing will take place in April.

Here is the entire document in pdf format.