[martijn9612]

This[0] is a very elaborate version of the turbo roundabout, checking it out in streetview might help. But basically the roundabout functions more like a standard junction with room to choose a direction before turning (I don't think there is an English translation for "voorsorteren", or sort before...).

[0] https://www.google.com/maps/place/Energieweg,+Nijmegen/@51.8...

[colechristensen]

"presorted" "prefiltered" would be adequate translations, but sort is a bit of an odd word to use for traffic in English.