We happen to drive through FIVE Traffic Circles to get south to Highway 60 in Wickenburg. They really work quite well, except for a few IDIOTS who do not know the etiquette for use in traffic circles. There are MANY semis on US 93 and they did not make the circles big enough for them to stay in the outside lane. Tom always tries to get in a position to block the left lane so the semis can take a bit of the left lane without being run off the road by someone trying to pass IN THE CIRCLE despite the large yellow YIELD sign as you approach the circle which has a 20 mph speed sign as well! Why is everyone in such a HURRY? We have seen at least a half dozen accidents where the semi has been pushed OFF THE HIGHWAY only to create a large delay in the traffic flow. And I doubt that anyone got the license number of the vehicle that caused the accident!!
The second most flagrant problem is making a right turn from the center / left lane crossing in front of the vehicle in the circle. The kind thing to do would be to slow down and get into the right lane for making a right turn! Again, being in a hurry is a recipe for disaster! Or at least a fender bender.
For the number of semis and vehicles of Highway 93, it is a wonder we do not have MORE road closures. Just last week the north and south bound lanes were closed from the highway 84 exit to the highway 71 exit, sending all the traffic through CONGRESS, a little wide spot and back to highway 93. I am sure that was a blessing that there was a solution to STOPPING the traffic on that main north/south highway even if frustrating for the people making that detour!
So use your brain rather than your accelerator and allow the other person to HAVE the right of way!