The last thread you had that blasted these signs got locked, you must be very selfish not to recognize that these signs regardless how stupid, silly or pointless you think they are actually are there for a reason and do help people, as was pointed out before you will not get statistical information on them as it is a help service for someone at the point of no return, the last thing they are going to do is say "hey I was going to end it all but I saw this sign", they call and talk to someone who tries to help them.
The signs are widely displayed all over the world so they do have an effect, you will never know the death to survival rate as you can't ask a dead person if they just ignored the sign.
This maybe harsh, but grow up and realize people have issues, they get depressed and anything or anyone to help is a positive, the signs are a great step forward and show that these large companies do have compassion and are concerned with what goes on (wouldn't they look cold if they just turned around and said too bad, not my problem)
Suicides are and have been for decades an unfortunate reality of railroads
The managers in their ivory tower know more and more about less and less, and end up knowing everything about *&$% all