Some Fed $$$ for flood mitigation work at Pelham...
https://new.mta.info/press-release/mta-awarded-federal-grant-protect-nyc-transit-westchester-train-yard-flooding
But they are staying in the CBTC game...
https://www.railwayage.com/cs/alstom-sells-north-american-conventional-signaling-business-to-knorr-bremse-ag/?utm_source=&utm_medium=email&utm_campaign=45435
Info on NYC subways and their predecessor companies, as well as subways in Boston, Chicago and Philadelphia:
https://utahrails.net/ajkristopans/EARLY-RAPID-TRANSIT.htm
From Mass Transit magazine:
https://www.masstransitmag.com/technology/facilities/shelters-stations-fixtures-parking-lighting/press-release/53097791/mta-new-york-city-transit-nyc-transit-pilot-enhances-visibility-of-no-standing-zone?o_eid=3654G2566189A9X&rdx.ident[pull]=omeda|3654G2566189A9X&utm_campaign=CPS240221125&utm_medium=email&utm_source=MASS+NewsViews+Newsletter