The MTA canceled Metro-North service for the Hudson, Harlem and New Haven lines because officials were worried about trains getting stuck in this blizzard.
Workers also needed to use plows to begin clearing the snow from the tracks.
By early Saturday afternoon, Metro North had resumed service on the New Haven line, but only to Stamford.
Driving conditions were also terrible, as officials urged everyone to just stay at home. Those who ventured out faced challenges.
"My car ran off the road, so I had to get it towed," driver Kirsten Halbach said.
The roads proved too risky for Halback, as her car slid off I-87.
In addition to the trains, bus service was also curtailed. The Tappan Zee Express, which ferries commuters across the bridge to Rockland County, was suspended.
Earlier, New York closed Interstate 84 to truck traffic between Pennsylvania and Connecticut because of the snow storm pelting the northeast.
The truck ban on the 70-mile stretch of highway was lifted late Saturday morning.
Police say all motorists should drive with caution and avoid unnecessary travel. Up to 2 feet of snow fell in some parts of New York by the time the storm wound down Saturday.
Check conditions by calling the state's free 511 information system or on the web at 511NY.org
(The Associated Press contributed to this report)
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