Amtrak’s NextGen Acela trains are set to begin service along the Northeast Corridor on Thursday. The first of those NextGen Acela trains, as Amtrak calls them, are scheduled to start running on the Northeast Corridor between Boston and Washington, D.C. on Thursday. The Acela trains are limited by the design and condition of the Northeast Corridor’s aging rails, tunnels and electrical infrastructure, which they share with slower Amtrak trains and commuter railroads. U.S. Transportation Secretary Sean Duffy boards a NextGen Amtrak Acela train for its inaugural ride to New York City and Boston. I don’t think it should just be China, Europe, Japan, others that have high-speed rail,” Duffy said on Wednesday.