My old layout in the center island of our circular driveway is disassembled, due to the need to put in retaining walls. For the time being, I am building a small, three loop layout on our back deck, which is 10’ x 16’. The outermost loop is the high-speed express loop. the middle loop is the “local” loop, and the inner loop is a trolley line. The two outer loops are connected so I can move trains between them. The trolley line is isolated from the other two loops. Eventually, we may expand the layout down the side of the house, using something like post and ladder.
Oh, and the outer two loops are DCC and the inner loop is DC.
This is the layout…