Why does heavy snow affect trains?

1, heavy snow caused the high-voltage line to fall on the locomotive power grid. When the wire is wet, it will conduct electricity. If the power grid does not dare to supply power, the train will stop.

2. After the heavy snow, the ground will freeze, especially steel, which will make the turnout not in place and slip. It will be easy for the train to fall off the track, and in serious cases it will derail.