Fra and dot call them quiet zones. Sadly the list of places with the restriction spots is getting long. I dont know the ins and outs of it rule wise but certain hours certain spots no horns unless some event makes it necessary. The train horns are a safety communications device. Noise is gor good reasons. When people rent apartments close to the tracks and crossings they should expect to hear the trains lol. Hence my calling them stupid for expecting no rail road noise.I like to know how they stopped the trains from sounding their horns at each and every rail crossing since that is pretty much mandatory per federal regulations.