In the UK speed bumps used to be called “Sleeping Policemen”.
I live in a rat-run in the UK which has a quarter mile of no footpath (Sidewalk). It’s the go-to route for people collecting their kids from the two primary schools at the top of the road. A lot of folks walk, and I walk my dogs at school-run time. Recently the council bowed to local pressure and put up speed limit signs - 20 mph. It’s horrifying to see so many parent disregard the speed limit. Early in the morning I hear people go past at speeds which must be more than forty miles per hour - you can tell just by the doppler effect. It’s normally the case that road signs in the UK are not erected until there has been a serious accident, with someone killed. Another way of looking at it is
“Road signs require a human sacrifice.”