The cooperation of people in general is important in securing safety. I want to further convey the fact that guide dogs can't do everything, along with the importance of people calling out to guide th

I understood that you aren't supposed to talk to the dogs, but obviously you'd want to have a word to someone about to fall on the tracks.

But it's scary to imagine you might call out to the person, but inadvertently disturb their guide dog by doing so.

Discretion is required I guess.

The man was walking with his dog on the wrong side.

If the dog allowed him to approach a drop without warning him the dog was not properly trained.