Apartments with windows opening directly onto El tracks are discounted in line with the unpleasantness. If you’ll put up a fight over an apartment building 2 blocks away casting a few hours of shade, you’ll definitely put up a fight over frequent clattering metal 2 feet from your bedroom window forming a permanent roof over the street.
I once lived on the corner of Lake and Wells, where the Brown, Purple, Green, Pink, and Orange line trains all transit a frog patch. (It is supposedly the busiest rail intersection in the world.)
Even though I was 25 floors up with "soundproof" windows, it was jarringly noisy at all times of the day and night because of the way the sound waves travel up a building.
