The signal maintainer was at the station working on a signal that was damaged when a train came in contact with an open signal box. The worker was rushed to New York Presbyterian-Weill Cornell Medical Center. His injuries are serious, but not life threatening.
Northbound 1, 2 and 3 train service was suspended around 8 p.m when the signal was damaged. Five subway trains were stuck in tunnels as a result. An MTA spokesman said all were moved to stations by 9 p.m.
At one point, all 1, 2 and 3 train service was suspended between 42nd and 96th Streets. Service quickly resumed with residual delays.
The MTA is investigating how the worker was injured.
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