What Joined 2 word term (15 letters) is used for a long engineered Curve on railway track which is Banked /canted to take Highspeed trains without reducing speed?

Help...
In North America its banked @ 6 inches high maximum on prototype layouts

and With the Very High speed trains in Europe

The "active" suspension Tilts trains up to another 7 degrees maybe 8? depending on where you are reading

Looks frightening but yet its a smooth ride
Heres some ideas on the Subject answer will be here

Superelevation? That's 14 letters. Highways for motor vehicles also have superelevated curves.

Thats the Word Professor --->ME (<---Can't Count!)

This link is off a Model railway site but it's Technically correct
www.trackplanning.com/superelevation.htm