Thanks for the suggestions. I'll work on fixing it up. I might make a sized-up version to fit the 6-car train but ill work on the signaling first.

This intersection only works with 3 cars or less

I made this intersection to plug into Nilaus' city block base design and he uses 3 car trains for his city block bases. I'm brand new to factorio so don't be surprised if I messed up the signaling. If anyone else could find a higher throughput 3 ...