See also “A Subway Named Möbius” by A. J. Deutsch…
“At the current pace of installation, the subway system as a whole won’t be converted to CBTC for another 175 years. It will cost $20 billion.”
There’s a short video linked in the article which is worth a look:
I concur, that video is great.
I found a pdf noting the failure of the MTA in managing complex software procurement, and more, which has something of a postmortem feel to it: