"Tony Polson" wrote in message



What is it about Underground trains and permanent way that makes them
so noisy? The traction motors are loud, the brake compressors are
loud and the noise of the rail joints and thumps over the pointwork
are also loud. Is it just me, or are they intrinsically louder than
on main line railways?

I think thje A Stock is particularly annoying because of the hideous
racket made by the compressors. The new S Stock should be a lot quieter.