Yes, that is the unfortunate truth. Humans are stupid, rushed, and fallible. Expecting them to override 50+ years of cars owning the roads because you put up a

Yes, that is the unfortunate truth. Humans are stupid, rushed, and fallible. Expecting them to override 50+ years of cars owning the roads because you put up a street sign is misguided. If it cannot be done safely, it should not be done. If we want more biking, we need to make it safe. "Sharing the road" is stupid and unsafe, like the OP says. We need a different solution.