|Sign in red box at right. SafeStart image credit: SafeStart|
The sign is apparently part of a safety program called "SafeStart". You can see a larger version of the sign next to the photo. I think the sign is particularly insightful; certainly, rushing, frustration, fatigue and complacency would be a huge part of the mental state that lead to incidents or accidents. [I'll also note that I suspect that some people (myself included) occasionally spend 80% of their day in one or more of those states.] I particularly like the concept of "line-of-fire" -- at a dispensing station, an operator/driver would certainly have to be concerned about that.
I also wonder if this sign has too many words to be effective; at some point, a sign has too much text to be effective. I'm not sure that it's reached that point, but I'm sure it's getting close.