The street smarts sign is weird. I get the “Look for Cyclists Before Turning” because I’ve almost hit runners and walkers who unexpectedly make a U-Turn or sudden movement left without checking for cyclists. Warnings are important even if you have a light and no one else is around and you feel ridiculous. They’re in their own little world, oblivious to anything else around them or the existence of bikes.
But the Slow Down part seems directed at cyclists Kinda passive aggressive. It’s YOUR fault we runners/walkers have to check! (How about you don’t suddenly run into the opposing lane without signaling somehow or looking?)