The nearest I can think of that we have are 'sleeping policemen'

Hmmm, never heard them called that (or thank-you maam for that matter)! Oh well, perhaps it explains why I drive over them so fast. I love it when I'm airborne! Oh ha ha ... in my dreams, maybe!

which are the bumps they put into the road to slow traffic down. <snip> What about the rest of you??

We call them "speed bumps" and the Zilders call them "Judder Bars". Don't ask me why, they're a weird mob over there.

Hev