Train Yard Puzzle Guide — Blue Card Route

Train Yard’s circuit climbs instead of descends: two switches on the same building — one inside, one on the roof — then the fuse next door. Nine crates make it the run worth learning perfectly.

Before you go

Blue keycard, 1 electric fuse, ~25 rad protection. No green card needed — this is the cheapest ticket to a red keycard in the game.

The route

1. Three-story building — first switch. Enter the tall office building in the middle of the yard and flip the interior switch.
2. Roof — second switch. Climb to the roof and hit the second switch up there. Both halves of the circuit are now armed.
3. Adjacent building — fuse. Cross to the neighboring building, head upstairs, place your fuse in the box, and flip its switch.
4. Blue door. Proceed to the blue reader, swipe, and step into the biggest blue-tier loot room in the game: 9 crates and the red keycard.

After the run

Recycle before you leave — nine crates of components add up fast. Then take the red card somewhere that deserves it: Military Tunnels for elite crates, or hold it for an Oil Rig raid with your crew.