This winter we've shown you how the MTA removes heavy snow from its tracks, but last night was the first real need to de-ice the tracks. 

The frigid temperatures combined with the wintry mix of weather we had yesterday caused the trains' tracks to freeze. 

On times like this, the MTA unleashes their R-21 De-Icing train to take care of the frozen tracks for other trains to safely use. 

This video, uploaded by YouTube user Dj Hammers, shows the converted R-21 subway car from the 1950's passing through the Pelham Parkway station. 

Check out the video below.

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