I live in the L.A. area, and I drive Mulholland Drive quite
a bit. And on that road, there’s a blind hairpin turn to the left directly
along a cliff face where just before the turn stands a sign proclaiming: “Watch
for Falling Rocks”. But where it’s placed makes it impossible for a driver to
do so without driving over the cliff and crashing into someone’s roof 100 feet
below. So I have to wonder if the sign is for safety or the opposite.