Many cities have visual displays to inform
deaf travelers of changes in transportation.

It is not always perfect.

On one ride in the city rapid transit system,
there was no visual display telling deaf
passengers that everyone had to get off
at the next stop. Fortunately for the deaf
passenger, he saw everyone getting off and
knew something was going on.

This same deaf passenger, later in the day,
saw a visual display sign showing the track
the upcoming train would arrive. The train,
however arrived at a different track. Again,
he saw everyone following that arriving

Two wrongs same day several hours apart!