This piece in the series of SUBWAY pieces I made is the split merge between two and four tracks
You can use it both ways. As a split from 4 tracks to two tracks or as a merge from two tracks to four.

This piece can be rotated.
Because the system always have "water in" to the left and "water out" to the right it does not matter if you put this turn in one or the other end of a 4 track tunnel

It you have look at the entrances of this piece then you see can see that the left water aqueduct is "water in", and the right is "water out".

I decided to not support aqueducts as a part of two track systems, because then I need four aqueducts in the 4track system, therefor there are an elevator tower and a downstream towe. You can buils a "fence above ground where catle, sucha as cows, chickens pigs will end up in, or you can wait a bit for my comming aqueduct only tunnel, that you can use to transport the cattle/players/villagers.

Before adding water please mount the pieces together and put them in place.

To add water, just take a bucket and pour water above each stair, that is after each sign.

Do not break the signs...

Link to main project (SUBWAY)

Additional Notes

This is one piece of several in my subway project, depending on how much explanation and complexity of the iece they are either ine in each project or bundeled.