Amtrak trainset #2001 arrives at Union Station in Washington, DC.

Trainset #2001 is a Bombardier Acela Express (usually referred to simply as "Acela"). Acela is Amtrak's flagship and high-speed rail service along the Northeast Corridor. Acela trains are the fastest trainsets in the Americas; the highest speed they attain is 150 mph (240 km/h) in revenue service. Acela trains use tilting technology, which helps control lateral centrifugal forces, allowing the train to travel at higher speeds on the sharply curved Northeast Corridor without disturbing passengers.

The first Acela trainset entered service on December 11, 2000.

Acela Express, https://en.wikipedia.org/w/index.php?title=Acela_Express&oldid=722885592 (last visited June 2, 2016).