There were delays of up to 90 minutes on trains into New York's Penn station after NJ Transit and Amtrak reopened service from New Jersey just before 7 a.m.
It's the third day in a way of massive service problems on the tracks and with the signals controlled by beleaguered Amtrak, the taxpayer-subsidized U.S. national railway.
The snafu was blamed on a stalled train and troubles with overhead wires.
Midtown direct trains were being diverted to Hoboken.
NJ Transit rail tickets were being honored by PATH and New Jersey Transit busses.
The scenes in Penn Station in Newark and NYC were pandemonium.