You forgot roundabouts with traffic lights.

Here’s one in Australia near Perth:

https://youtu.be/h8lhX9Q6Z5g?si=eloUWLcH8q3eJiZH

And I’m certain I’ve driven through other roundabouts with traffic lights in other states.

In England we even have roundabouts of roundabouts https://en.wikipedia.org/wiki/Magic_Roundabout_(Swindon)

I know of a couple in NSW: one in Albion Park, and another in Bomaderry.

They work well when the peak-hour traffic tends to block some of the entrances. You can use the lights to allow the blocked entrances to flow, then turn the lights off out of peak-hour.