There are double reverse curves in the design which lets trains turn in either direction. Also a train can be brought from the yard to any section of the layout. I have really big, really heavy motive power and don't like lifting them to put them on the tracks, ever. Just like the real ones. I will take my time. My main goal is to get the trains running again. I don't like all of them sitting in their boxes with their batteries (leaking). At least NiMH batteries don't leak like the old carbon zinc batteries in Lionel 1950s Santa Fe's....(experience).