This is an honestly serious question that I have been extremely curious about, but do not have the nerve to ask. Not sure if this is the right section to post or not.
How do the blind know when to cross the street?
I noticed on several occasions a blind person alone at in intersection waiting for the signal to change, and when it does they correctly go into the street.
Now I would understand if there were a bunch of people with him/her so that they could hear them crossing too.
I also had an occasion where it was myself and a blind person at an intersection, and noone was remotely coming. Normally I would just walk even though it says not to, but I was afraid that that person would take his cue to start walking out there and get ran over.