The Metropolitan Transportation Authority Police Department (MTAPD) is the police agency of New York's Metropolitan Transportation Authority Officers of the MTAPD are fully empowered under the New York State Public Authorities Law and are commissioned in the state of Connecticut.is the law enforcement agency of New York's Metropolitan Transportation Authority. MTA Police Officers are fully empowered under the New York State Public Authorities Law and are commissioned in the state of Connecticut. Their geographic area of employment extends to all counties in New York served by the Metropolitan Transportation Authority, giving the MTA Police the ability to exercise full police authority within the counties of Dutchess, Putnam, Orange, Rockland, Westchester, Nassau, Suffolk, and in New York C