I ran into an issue over the past two days with the Global Trade Network. To be specific, when my Region reached roughly 20K commuters on the rail lines, the Trade Depots and Trade Ports completely stopped functioning. No rail, no shipping, no trucks.
Don't know if anyone else has had this issue, but it was extremely frustrating. Bulldozing didn't work. Rerouting road traffic didn't work. It was a mess... lost 100's of K's of simoleans, and lots of residents to blackouts and other issues.
I finally decided to mess with creating "spur tracks" for my rail, and it worked! Maybe that is selfevident to everyone else, but it wasn't immediately obvious to me so I thought I'd post a couple of shots here. In each city where I deployed these, passenger and freight traffic immediately resumed.