Nina Walker, of Woburn in suburban Boston, said she had to shovel about 8 inches of snow off her driveway before driving to Boston's South Station to take a train to New York.

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Clementi went to the campus food court, bought a burger, and, at about six-thirty, took the university shuttle bus to the rail station, where he took a train to New York, then a subway uptown.

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Callahan's commute takes her through New York's Grand Central Station, one of the nation's busiest train stations and where she feels most uneasy.

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Some areas of the New York subway remain out of service, notably South Ferry station in Manhattan and the A train to the Rockaway peninsula, but miles of track were never touched by the flood.

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