On 10/02/2018 11:47 PM, Rod Speed wrote:
Ours are low enough so that trucks and vans can
just drive of them, with a shallow curb so they
don't even have to slow down to do that.

The larger ones have a concrete apron for that purpose. The tiny ones
were constructed without thinking that something like a moving van might
need to navigate them.

Many drivers haven't figured out how they work yet. We have many four
way stops where people take turns in an orderly fashion. They tend to
take roundabouts the same, stopping before entering even if the way is
clear, which defeats the purpose.