ABS's prefab has only 1 kind of 45° curves prefab and lacks 22.5° ones.
I decided to make additional ones to complete collection. My prefabs are made in same manner as ABS's prefabs and come in both clockwise and counter-clockwise versions. Only red coloured version is included, making BLU is as simple as selecting track in object mode and changing it's skin to 1.

Additional Track curves! v1
Appendix to ABS's prefabs!