Drivers returned to the roads at 7:30 a.m. after the storm dumped only 10 inches of snow on the city.
The attack began with an argument over the 28-year-old vendor's food, police said.
The Port Authority is building a covering in front of the WTC PATH station because of falling ice.
Ice falling from 1 WTC temporarily shut down PATH train service to the World Trade Center.
The six suspects, all in their 20s, attacked a man in the Christopher Street PATH station, the PAPD said.
A fire broke out shortly after 2 p.m. on the roof of the under-construction station, the FDNY said.
The entrance to the World Trade Center PATH station was closed as a precaution.
Flights were grounded at New York City-area airports Friday evening.
The National Weather Service has issued coastal wind and flooding advisories.
Large trucks were allowed back in the tunnels on Nov. 16, 2012.
More service restorations on PATH trains are scheduled for Monday morning.
A disabled train caused delays of up to a half hour during the Tuesday evening rush.
The Giants' ticker tape parade will bring street and subway station closures and more PATH service.
The Port Authority said thousands of commuters were redirected to the WTC station.
A proposal by one member of Midtown's Community Board 5 to extend Sixth Avenue's bike lane to Central Park was met with resistance from other members worried about increased congestion.
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