There's tactile feedback for the blind on these buttons. I'm not sure I'd class the button you linked as particularly good - most people know what to look for w

There's tactile feedback for the blind on these buttons. I'm not sure I'd class the button you linked as particularly good - most people know what to look for with traffic crossing buttons, and duplicating the lesson on every (quite small) button seems a bit pointless... and useless if you don't read English (eg tourists etc). It's overall too complex for a simple function. Using a white light for 'WAIT' is also a wasted opportunity (should be a regular 'warning' colour instead). I don't really use either mechanism, but I would guess that the ticker in the linked article (the metal bit in the middle of the arrow gives a strong click) would be preferable to touching something underneath a city-dwelling box, where muck, gunk, and whatever accumulates. That's an edge-case complaint, though. Another thing to consider with these kinds of things is reliability, maintenance, and cost. May not interest the UX people, but will definitely interest the local councils...