There are traffic lights: they are not only the green man shows and beeps when green. For the blind.
The second time I've seen sitting near the Blackbird, and squeaks. In the same way - mimic. Good imitation, it seems.
But the traffic light is red.

Do they allow blind people to drive in Mother Russia?

I think he is referring to the audible signals attached to traffic lights that help visually impaired people know when it is safe to cross. The audible signal of course coincides with the color of the light.

One never quite knows.

Hell,it seems that we let them drive over here as well.