Do not try this at home! It is silly, impractical, and inefficient... but fun
I started with the base octagon and for some unknown reason in a RHD rail system, the outside rails run counter-clockwise. There are two horizontal and two vertical loading/unloading lines that turn left into the octagon, and then turn left to exit; chain signals are used to prevent trains from blocking the entrance/exit lines, and train limits are used to ensure there is room to park for any train that heads into the octo. On the west side, there is a tiny siding for the fuel train to deliver fuel to this octo; on the east is a siding for my personal transport.
I then added the wave: a second lane running west to east under the octo, and east to west over the octo, as well as running north to south on the west side, and south to north on the east side. I tucked in connectors to allow trains to enter the octo from the wave, and exit back on to the wave. An empty octo looks like this:
- Wave octo detail.png (5.63 MiB) Viewed 1554 times
So instead of smaller diamonds in the corners between octos, I have larger rectangles in between. It is a blast watching my trains navigate the waves! They have to up, down, over, and around, just to get to the octo next door: I think I have finally added enough signals to avoid deadlock, but this is the fourth time I have told myself, there that should fix it. Anyway, here is my mini octo wave after about 200 rocket launches. Yes, the Factory Must Grow, and no, really, you do not want the BP... enjoy!
- Wave octo just for fun.png (461.92 KiB) Viewed 1554 times