Acela Express #2004

Acela Express #2004
electric trains
Image by cliff1066™
The Tier II crash standards, adopted in 1999, have also resulted in the passenger cars being designed without steps and trapdoors, which means that the trainsets can only serve stations with high-level platforms — this currently restricts them to lines with high-level platforms such as the Northeast Corridor. Bombardier have since used the Acela Express’s carriage design and a non-electric variant of the power car for their experimental JetTrain.

en.wikipedia.org/wiki/Acela_Express