[ZEBuilder]

iON has high speed curves? I can't think of many curves that iON has (even relatively gentle ones) where the train doesn't slow to like 20km/h.

The only real place along the ION line where it takes a curve at speed is along the previous freight right of way between Uptown and Northfield. Even then it's such a gradual curve that it's barely noticeable.

The curves aren't even the biggest issue with the ION its the lack of TSP. It does have some priority but when you take it ever day you notice cars are still king everywhere along the line. There's also some really weird signal blocking which forces trains to slow way before it makes sense, if they don't slow the ATP system kicks in and the train emergency brakes, it doesn't happen often but when it does you go flying, however it happens enough that some people noticeably brace themselves expecting it to happen.