AMTRAK is a passenger RAIL service in the United States that operates more than 300 trains daily to more than 500 destinations in 46 states and three Canadian provinces. The term AMTRAK is an acronym for the National Railroad Passenger Corporation, which was created by Congress in 1971. The RAIL solution to the crossword is an abbreviation for the RAILWAY system, while RAILWAY is a synonym for the same. ACELA is the name of Amtrak's high-speed train service, which operates along the Northeast Corridor between Washington, D.C. and Boston.