100% free flowing service interchange with no traffic lights, stop or yield signs. Feel free to come up with a name for this plate of spaghetti, I couldn't think of anything. :
How to set up Manual Traffic Lights - Cities Skylines: Advanced Tutorial - YouTube
Steam Workshop::Traffic Light Replacer
Cities: Skylines Mass Transit Traffic Guide | Cities: Skylines
Traffic - Cities: Skylines Wiki
Traffic lights disappearing in some intersection configurations | Paradox Interactive Forums
No traffic lights? | Paradox Interactive Forums
What's the point of traffic lights? : r/CitiesSkylines