Full service starts Saturday at the new Yaphank-BNR station, but the ceremonial first train rolled in late Friday morning.
A Long Island Rail Road train struck debris in one of the East River tunnels following an earlier disabled NJ Transit train, causing disruptions to the morning commute.
The blizzard has impacted everything from New York City subways and buses, the Long Island Rail Road, Metro-North, New Jersey Transit and ferries.
A major winter storm is impacting mass transit agencies and services across the Tri-State area, as most of the region braces for the potential of over a foot of snow.
The Long Island Rail Road has stepped up its crackdown on fare beaters, which includes strict new measures that some riders are unhappy about.