well, there are instances ppl will know how to move up.. all it
takes is for one person to start it moving.
Acutally ppl these days dun have e habit of holding on to
grabpoles properly.
Move up is one issue. Move down is another issue. There aren't much
grabpoles like the double decker staircases and double decker
staircases faces backwards, so falling down is not very often while
climbing down. But WAB buses are different, when people alight,
they climb down forward facing, which is in tandem in the direction
the bus is moving. And it gets quite unstable for buses like Scania
K230UBs and Mercedes Benz OC500LEs to a lesser extend. I have seen
several occasions people almost fell or fell down the 2 steps.
Having a full low floor is not a requirement but it is certainly a
plus. One step up is still better, than 2.