To prevent injury to themselves & others
So they don't fall and get hurt.
You should have asked them instead of google lol
Not sure, I'd bet it's a concrete ground and don't want a lawsuit. It's a very "slip and fall" way of income nowadays for many. People are sue happy and law firms know this so they have to cover their butts.
Because they don't want them falling and tripping, but I understand what your coming from.
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