Comment by pvaldes

Unless there is a lot of blind workers in the room, much better, yep.

Blind people at least should have a way to be able to evacuate a building with sound clues instead the traditional lights that turn up if there is a fire and are useless for them. The emergency lights are mandatory by law, but including emergency blips could be also useful for everybody in some areas where a lot of blind people are expected (or live).

Blind people should be given the opportunity to evacuate a building or a school just by their own means, even if is alone or left behind in a emergency. You can't always rely on touching to orientate yourself if there is a fire. Specially metallic things.