Obviously they are not the solution to every situation. It is equally silly to say they are NEVER the best solution.
They are great for people who know how to drive...
Unfortunately, there are too many idiots out there...
I noted that the circles as built in NJ worked until traffic got too high. I also noted that the traffic circles in MN seemed to have been designed to imped traffic, rather than smooth it.
The deciding factor seems to be whether the State Highway Department can be trusted to build them in areas with little enough traffic and/or big enough loops to make them really free flowing. Maybe in Kansas they can. But in MN they can't, and WI is similarly progressive and anti-automobile.
You might still be in Kansas, but many of us aren't in such conservative states.
equally silly to say they are NEVER the best solution
True, however DOT in WI is putting them everywhere they can sneak them in. They are obsessed with them and need to be if not stopped at least slowed down. They are never always the best solution and often they are the worst.
DOT had to put up warning signs on I-43 about them because they backed up traffic so far on the hwy.