With all of the recent complaints and news about train noise, one resident measured the noise.
Attached is the video I made on Saturday using and EXtech Class 2 sound meter. This is OSHA approved meter. It indicates that standing on my property about 25-30 feet from the newer train engines as they pass, the horn noise reached 177 decibels. As it got a little further away, 145 decibels. The important thing to understand is that when FRA or even All Aboard talks specifically about train horn noise, they are required by regulation to test it in a certain way. The regulations are as attached.
They test only in front of the train, 100 feet, at a point 15 feet above the railing using a slow response setting on the meter and using a continuous 10 second blast of the horn. I will not be able to duplicate that without cooperation. So when they talk about a reading of 103 decibels, realize that even if they did it right and are telling the truth, it does not mean that the maximum noise made by the train horn is only 103 decibels. That is equivalent to a chain saw running at full power. You cannot hear a chain saw more than a mile away inside your house. But you can hear the train horn, at least on these newer train horns. But in the “real world “, on my property, we hear about 90 decibels from the train itself , consistent with published levels for a subway train passing , and over 177 decibels from the horn.