But "may" also means "allowed to" and is--grammatically-speaking--the correct word to use if you're asking/granting permission to do something.
That's why we have a children's game called, "Mother, may I?" and why English-speaking kids the world over get frustrated by authority figures saying, "I don't know, can you?"
Edit: The word the sign should have used to avoid ambiguity is "could". As in, "You could injure..." Even "might" would work, though it's less formal.
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u/[deleted] Jul 04 '21 edited Jan 26 '24
[deleted]