Inventions to shoo livestock from railroad tracks, etc

Mark Frauenfelder writes, on BoingBoing:

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.”

BONUS: Railway collision ejection capsule

BONUS: Flann O’Brien’s solution to the problem of head-on train collisions: