Three inventions to keep livestock off railroad tracks

Why do cows and horses like standing on railroad tracks? Here are three inventions to encourage them to loiter elsewhere. One involves a jet of hot water, another adds a whistle to the water jet, and a third involves a humanoid automaton that waves its hands and strikes a gong. I agree with Greg of Futility Closet when he says, "I desperately wish this had caught on."

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