Changing tracks

How do you change tracks from the original route?

I'm trying to make a game from a route that I already have and the mode I'm going to play involves changing tracks from the original routing and would like to know how to do it.

Please and thank you.

it's kinda pain in work and time, but at least what should you do is changing any curve and object (including rail) along in the track you want to changing about.

First of all you should know which rail you want to change it (example: main track want to be switched to rail2, that available 5 meters right to rail0) it means you should switch every object position 5 meters to left, and using curves / pitch pretend you are using the rail2 track...

hope this helping, but in case still confused i can try making example of that