[averageRoyalty]

In Australia, a lot of buses have a 40kmph sign on the back to show you should pass the bus at 40 when stopped - but it's laid out and coloured the same as road signs.

Every time I'm behind a bus in my Tesla, it reads the sign on the bus, displays it on the scren as the current limit, and sometimes (arbitrarily it seems) if I have autopilot on it reduces the maximum allowed speed to 40.

I can't speak for the logic run elsewhere, but AU Teslas for sure use it.