Mark Brader wrote:

This summer I spent some time in Chicago. I never rode a bus while
I was there, but several times I was walking along the street when
one stopped near me. And *guess what*...!

While an automated voice would be unhelpful, there would be a use in
buses having a speaker on the outside and a microphone with the driver,
to say things like "Service 9 is the second bus waiting at the stop"
and other helpful bits.

Neil