In the article, the phrase "barrier-free" is used a few times. The first couple of times I thought it meant no walls, but then I read this: "Barrier-free overnight travel will also be possible with the new Nightjets. Every Nightjet will include a multifunctional car with a low-floor entrance, a barrier-free couchette compartment, and a barrier-free toilet." I know I wouldn't be too excited about a wall-free toilet, so I'm hoping that "barrier-free" means something else. So what might it mean, no steps?