- Location
- Wales
With the right rail setup on each side of the gate you can pass a mile long train into the gate in a fraction of its max 30ish minute window giving you time to connect tracks from one side of the gate to the other then finish pulling the tracks before the gate self closes. A large loop of tracks with a into the gate or bypass back to the loop switch would let the train maintain full speed even with a no go call.
The Commonwealth series of books by Peter F. Hamilton does a similar thing with a train network running through portals.
It works fairly well for expansion from earth, but when SPOILERS happen, and SPOILERS things go a bit pair shaped.