The MetroCard is the payment method for the New York City Subway; New York City Transit buses, including routes operated by Academy Bus under contract to the Metropolitan Transportation Authority (MTA), MTA Bus, and Nassau Inter-County Express systems (NICE); PATH; the Roosevelt Island Tramway; AirTrain JFK; and Westchester County's Bee-Line Bus System. It is a thin, plastic card on which the customer electronically loads fares.