I am sure I have a fix on the NJ traffic circle, finally. It's a layered kind of approach to getting round an intersection. You have to carefully choose the lane you want in order to get through it and come out on the road you want safely. 
     See, everywhere else I have ever lived, the rule was that people in the circle have right of way, and people entering the circle must yield. Not the case here! Thankfully, some circles are now being painted with European yield marks to help new people adapt to the peculiar way it is done here, with major roads getting right of way. I drew a diagram (oh no!). :-) The circle and highways are absolutely fictitious, and any resemblance to any actual circle is completely intentional. 
     First of all, every traffic circle has at least two names. This means when you talk about it with somebody, you first have to figure out if you are talking about the same circle or not. Then remember the rule of thumb that the larger or more important road gets right of way coming into the circle. In this instance, people traveling 89 get right of way. 
     The advanced bit is choosing which lane to be in while entering the circle, and while yielding. Generally, it is best to be in the outer lane if you are exiting at the next opportunity, and in the inner lane if you are taking some later opportunity. See Joe and Ann there? Joe, in the red car, is communicating his intention of passing up the chance to exit at 567 North, while Ann wants to exit there. I bet Joe is going to take 89 West, or even 567 South. Now Mike is in the proper position to take 567 South, but since he is in the major traffic flow there, he could also wind up in the left lane of 89 West, and that's a variation that's a bit creepy. It would very, very wrong of him, though, to try and take 567 South if he were in the outer lane of the circle. An accident could happen. Lea is just waiting for him to go so she can take 567 South or 89 East. She's not in the correct lane for 89 West. 
     You can tell what happens on a busy day when most of the traffic is going west on 89. All the cars that have to yield to it can wind up bottlenecking and even clogging up the whole circle, just waiting for a break in the traffic in order to proceed. 
     Not everyone chooses their lanes so carefully, and near-misses happen all the time. I don't think everyone has observed how the flow of traffic goes as closely as I have. 
     I dunno why I am even writing this, it's not the most exciting thing one can write about. *shrug*