Funny

I had a good laugh standing on top of the Arc de Triomphe watching four/five/six 🤷 chaotic lanes of traffic swirl around it. And then a gendarme turned up and started pulling people over for no apparent reason - it was wild.

Video from some Czech tourists: https://youtu.be/-2RCPpdmSVg

That’s a traffic circle, they all suck.

Roundabouts are not just for efficiency, they are for safety. A regular 4-way intersection introduces multiple conflicts between cars turning left and cars coming from the opposite direction.

A roundabout only has one conflict for each connecting street, and the right of way is clearly defined.

the sequel to Michigan left

D could take the first exit while signalling

Well couple of things.

You don't know how long C has been incorrectly yielding. There may well have been enough time for them both to move onward.

Also there's nothing to say that A isn't a yet undiscovered C.

I'm from the UK so roundabouts are second nature. I've been an accidental C before. Where I had to wait for a lot of cars that had priority over me. When it finally was open for me I was zoned out. Luckily the car behind me was very polite and just used a short beep of the horn to bring me back to reality.

There are specific times when this might be appropriate. For example if I am turning off at the exit after where the car is joining from, I can see they're indicating to making a move around the inner part of the roundabout which is clear, and if I proceeded I would join a queue for my exit and block them. I'll usually stop short and gesture they move in.

But otherwise it's usually safer all round to stick to the rules.

A does have the right of way over C. And the OP has a quite violent interpretation of transit rules that only make sense if it's a large roundabout with a low speed.

Also, the pink car has the right of way over both. Both are quite right at stopping there, and D is invited to keep stressing themselves to death.

Now, if the pink car decided to stop and wait for A, then it maybe is worth pointing it to them.

Depends on the size of the roundabout. For one big enough they could both join simultaneously and maintain a safe distance, that's fine. If not, if you drive on the left the one on the right has priority and vice versa for the rest of the world.

In fact it's only a problem if people arrive simultaneously at all junctions, since now there's no person to the right of everyone.

In this case usually everyone stops (unless one of the cars is a BMW or audi) and then someone will start to move first. After which normal operational rules are restored.

Or badly designed ones with a combo of yield and stop signs that effectively prevent the people with the stop sign from ever proceeding

But they are on the right side.

Were this a 2 lane roundabout, car d would be changing lanes to bypass car c, nearly striking that pedestrian

My mom taught me to never trust a turn signal (or lack of one)

You not following the rules because you assume everyone else isn't following the rules is why no one is following the rules...

this just here, we don't have many roundabouts but, the amount of drivers who think it's a race to get from point a to point b is unreasonable. I'm not about to enter the roundabout as car c if the pink or yellow car is flying with no indicators.

C has plenty of space to be out of the way before pink and yellow can catch up to it.