One quick question that I have noticed on some of the layouts on here that have reversing loops or switches that would change the direction of the train. Are power separation clips/blocks or reversal units not needed for the FasTrack as you would need in a 2 rail system? I know in G scale we have to watch those issues unless a DCC is involved I believe but i'm unfamiliar how it works in the Lionel 3 rail system.
Sorry, I don't mean to hijack the thread at all, figured it was a good question for a newbie in the FasTrack section.