Fast Change Train Intersection
Train Intersection for maintaining train speed and no-mod vanilla game. Couldn’t find a good interchange on the Workshop. Cities players date back to 2015. One-way track makes split angles tighter and we’ve had them since May 2017.
A lot of the information I find on rail transport is 2 or more years old. It suggests separating types by passenger outside connection, cargo outside connection, and cargo local only. A cargo ship to rail station has been added since and voids one popular gameplay tip. My cities with fewer than 90,000 pop do not have trouble with any shared lines.