NEW YORK (Standard&Poor's) May 5, 2015--Standard&Poor's Ratings Services has assigned its 'AA-' long-term rating to the Metropolitan Transportation Authority (MTA), N.Y.'s transportation revenue bonds (TRB) series 2015X. The outlook is stable. At the same time, Standard&Poor's affirmed its 'AA-' issuer credit rating (ICR) and 'AA-' long-term rating on the MTA's TRBs outstanding. Standard&Poor's also affirmed its 'AAA/A-1' rating on the authority's series 2005D TRBs. "In part, the 'AA-' rating reflects our view of the MTA's very low industry risk, extremely strong economic fundamentals, and extremely strong market position," said Standard&Poor's credit analyst Joseph Pezzimenti. The authority is issuing the bonds to secure a loan from the Federal Railroad Administration through