S&P Global Ratings assigned its 'A' long-term rating to the Metropolitan Transportation Authority (MTA), N.Y.'s proposed estimated $434.4 million series 2019C transportation revenue green bonds (climate bond certified). At the same time, S&P Global Ratings affirmed its: 'A' issuer credit rating (ICR) and 'a' stand-alone credit profile (SACP) on the MTA; 'A' long-term rating and underlying rating (SPUR) on the MTA's previously issued transportation revenue bonds (TRBs); 'AA/A-1', 'AA+/A-1', and 'AA+/A-1+' dual ratings on the MTA's various TRBs outstanding, reflecting the application of our joint criteria, assuming low correlation, and reflecting our 'A' SPUR on the MTA's existing TRBs; and 'SP-1' short-term rating on the MTA's previously issued transportation revenue bond anticipation notes (BANs). The outlook, where applicable, is negative.