Here's a sign about risk....
Risk of Injury, Do Not Cross Barrier
The sign itself is looking a bit aged unloved, as are the surroundings. Perhaps the sign's not really needed and has been forgot about, and may be not relevant anymore.
But pan back and stand around a little and the very real risk becomes very clear indeed
Reassuringly there's a more serious sign along the way....does make you wonder if the original rather tired sign is actually doing more harm than good.