Sorry I didn't see this sooner, but just some food for thought. As currently designed, your trains can only run in one direction after leaving the yard, and I mean always in one direction because there is no provision for turning locomotives other than "the hand of God" (YOU in this case). In addition, there is no way for any train to service the industry off the inner main line unless it pushes those cars out of the yard, and even then, it looks like you will have to push those cars all the way around the loop before crossing over to the inner loop.
Please take the time to do some reading about model railroad operations before you start laying track. It can be a lot of fun and helps prevent boredom from setting in while watching trains just run around the same circles/ovals.
Chuck
