I don’t know for sure about the heigth. I travel mostly in Fryslân. There is the heigth adapted. You can tweet the NS to ask this

Intercitys have 2 steps, you can take them but then you need to book a ramp by NS

HeyHanneke pointed out your posting to me. I have lost of experience with trains in the Netherlands. 🙂 The sprinters (slow trains) from NS are mostly accessible. On the train from Amsterdam Airport to Leiden there is alternately a sprinter and an intercity. Problem is that not all stations have the right high and I don’t know how that is… Read more