Standard&Poor's Ratings Services has affirmed its 'AA' rating with a stable outlook to the Metropolitan Transportation Authority (MTA), N.Y.'s dedicated tax fund (DTF) refunding bonds, including the subseries 2008B-3a and 2008B-3c Securities Industry and Financial Markets Association (SIFMA) floating-rate tender notes, based on an expected remarketing into a term mode with a weekly variable interest rate based on an adjusted SIFMA rate index. After remarketing, bonds will be subject to mandatory tender for purchase at the end of each term rate mode interest rate period; the purchase date is Nov. 1, 2021, and Nov. 1, 2019, for the series 2008B-3a and the 2008B-3c bonds, respectively. The bonds are subject to optional redemption by MTA on or after May