The Blue Line is already operating at the electric and signaling capacity of the line. There is no simple/cheap fix so you get the stagnation you see everywher

The Blue Line is already operating at the electric and signaling capacity of the line. There is no simple/cheap fix so you get the stagnation you see everywhere in transportation everywhere in the nation. They are currently working on a signaling modernization program, but I don't know the details well enough to know if it will help much. New rolling stock that should offer a bit more capacity also starts arriving around 2020. I agree it's frustrating to watch. I moved to Chicago in 2004 and my El stop on the Blue Line was pretty lightly trafficked. Now you are lucky to get on the train during rush hour, much less get a seat. As the neighborhoods continue to heat up along the line something has to break at some point, but NYC shows things can get really bad and there is not enough focused rage to get anything done even then.