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I really want to use them but people say they are bad. If they are bad are there any other nice and simple junctions?
External link →I really want to use them but people say they are bad. If they are bad are there any other nice and simple junctions?
External link →If you're seeing people talk about them messing with performance, that's an old bug that was fixed ages ago.
What? As far as i know, roundabouts are still horrible for UPS compared to usual 4-way intersections.
When people do roundabouts it's majority of the time for cityblocks, and that's where the UPS concern is the biggest because it's repeated in so many times.
(I guess with "performance" you meant throughput, but UPS is still more important than that in my opinion. I don't remember when i last saw any train waiting its turn at an entrance to any intersection.)
There isn't a significant UPS difference between rail systems with and without loops.
The main factor that affects train pathfinding cost is how direct a path there is from the train to the destination. Loops don't really influence that.