Rail Junction

Rail Junctions are a railway item in Astroneer. They allows for the creation of rail line junctions that splits rail lines in three directions. Each bundle contains 5 Rail Junctions and may be placed in the backpack's Aux Slots for easy placement of posts.

Source
Rail Junctions are placed from a.

Uses
Rail Junction Bundles are used to place on terrain to expand the rail lines. The bundles may be placed in the Backpack's aux slots, which allows for quicker placement by pressing the context keys (PC: or ).

Interacting with the Rail Junction will cause the rail connection to switch between the three possible states. When travelling on the rail line using a Rail Engine, Left and Right (PC: and ) can be used to switch the junction direction, when the train is close enough to the junction.

An Automation signal to one of the signal input slots on the junction will switch the junction to the corresponding state.

Placing a Rail Junction within range of another Rail Post or Junction will connect a rail line between them, deforming any terrain that might be in the way.

Rail Junctions may be placed on any terrain, allowing for placement on walls and ceilings of caves.

The maximum placement distance for the junction is shown as a coloured dial on the base of the junction when placing.
 * White indicates valid placement, below the maximum rail length
 * Blue indicates valid placement at optimal rail length
 * Pink indicates invalid placement. The desired rail line segment is likely too long.