In Boise, the stoplight on corners downtown buzzes when it's safe to cross the street. I was standing there with two young ladies waiting, and the one asks the other one "What the buzzer is for?". The other one looks at her and says "I don't know either.".

I explained to them that it signals blind people when it the light is red. They were both shocked. Then, the first one says indignantly "What on earth are blind people doing driving?".

I'd still like to know why the keypads on drive through ATMs have Braille.

For the same reason they have Braille signs in an art gallery.