Train changes track gauge.
Previously:
Moving a train manually - video
Train rerailer - GIF
Locomotive sandbox spraying sand on rails for traction - GIF
Richard Feynman explains: What keeps a train on the track?
Landslide derails train - video
Derailing train - GIF
Laser train for clearing rails - GIF
Optical scanning inspection train - GIF
Train track removing machine - GIF
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