What's the purpose of all those reverse curves in the track near the turnouts and the book? A real railroad doesn't build curves for the sake of watching trains wiggle through them. Curves slow trains down, & add drag to the train, which causes it to use more fuel, and that costs the railroad company money. Curves are necessary on railroads, both real, and model. But on the prototype there are curves only where they serve an obvious purpose, Like following a river pass through hills. A model railroad should ideally also show the reason the curves were built.
Traction Fan 🙂