thank you for that reminder/clarification. I forget sometimes how much we think we have clear pictures of how things like that work when really we're just listening to someone trying to explain what the math is doing and we're adding in detail.
diverging diamonds handle much larger volumes than round a bouts. plus they're typically useful for interstate highway interchanges with large collector roads, so you can't really expect the high speed highway traffic to slow down and maneuver around a circle.
there are a lot more conflict points in the cloverleaf, the diverging diamond reduces locations where a crash may happen. and there are a lot of busy interchanges that don't have the land for a full cloverleaf. it may feel very similar to the driver; having to wait at one light, and then the next one. but we have a few diverging diamonds in my area and they work way better handling the higher traffic volumes we're seeing with recent development push.
I try to remember that we, the public, doesn't have any idea how many miles are driven on autopilot or full-self-driving. We hear about crashes and argue about whether or not FSD/autopilot was engaged or made a warning and disengaged at the last moment but the driver failed to avoid to crash. But we don't know the denominator in the ratio of crashes per mile so we can't directly compare it with human only or other manufacturers' automation products.