things that are weird

There's a playground near where I live. It's a very nice playground for kids, with a lot of the usual stuff in it. What I find odd is that the yellow road sign to warn motorists to slow down, be careful, is the usual stylized kids, on a teeter-totter. Which is a structure that isn't actually in the playground. Which generally aren't in playgrounds anymore, as they are considered too dangerous. Yet, that's the symbol chosen as most easily recognized for motorists. When those kids grow up, it won't be. I wonder what they'll pick next?