This YouTube channel is based on my CSX Modern HO layout. The layout is always based on current CSX operations on the Philadelphia subdivision. So change is constant. I am always adding and removing engines and freight cars based on current operations. So if CSX retires a engine type, I do the same. I also maintain the same group of trains that they run on the Philly sub. The layout has 2 helixes and 4 levels. Level 1 and 2 are the main levels. Level 3 is all the staging yards and Level 4 is the shortline that interchanges with CSX at Wilsmere yard in Wilmington, Delaware which is the ESPN. There are 3 total staging yards and they hold over 600 cars combined. The layout has 800 active freight cars and needs about 70 engines to run. Train count is about 24 trains at this time but it fluctuates. The main line is 980 feet and there are 3 major yards. Bayview yard in Baltimore, Wilsmere yard in Wilmington, DE and Eastside Yard in Philadelphia. It uses Digitrax DCC and is fully signaled.