A train with mechanical problems has caused service changes and delays on a number of subway lines during Friday's evening rush.
The train was experiencing mechanical problems at Nostrand Avenue around 4 p.m.
Delays have been reported on the 2, 3, 4 and 5 trains.
Southbound 2 and 3 trains are running express from Atlantic Avenue-Barclays Center to Franklin Avenue, the MTA said.
