>Being underground won't protect you from the noise of the mechanisms, but neither do the walls and roof of a train. Being on a train is loud. More recent trai

>Being underground won't protect you from the noise of the mechanisms, but neither do the walls and roof of a train. Being on a train is loud. More recent trains can be quite protected from mechanism noises. The line I'm taking more often has received brand-new trains and I usually don't hear the noise.