Calming does not result in more danger than presently exists...
Maybe we are arguing semantics...as a motorist, I have looked forward to this circle for years! Now that I see the design, the only loser I see is a road cyclist turning either left of going straight. Their right to the road is protected by law, but they come out considerably more vulnerable with this design and increased speed.
My point on the speed is that part of the justification for it being traffic calming was the posted 15mph speed...but the engineer himself noted that design will allow for a speed considerably greater than that...making the cyclist that much more vulnerable...
If you don't grow where you're planted, you'll never BLOOM - Will Rogers