Take on Slow Children

I always wonder why some of the most basic billboards and menus lack
proper punctuation. Yesterday, while driving through some nameless
suburb, I come across a street sign which reads 'slow children'
Is the sign supposed to bring attention to a child with developmental
issues, because that is the way it reads, or just a poorly designed
one lacking punctuation?. I have to think that they are not talking
about mental retardation, but instead, just warning drivers to beware
of children at play.


The irony, of course, is that TOR is infamous for the lack of commas.