Beginning at 4 a.m. this morning the newly-named H train will operate every 15 minutes between the Far Rockaway-Mott Avenue station & the Beach 90-Holland station, making all intermediate stops using a connection known as the Hammels Wye that is not normally used for service. The H train will run between 4 a.m. and 1 a.m. daily, leaving time for overnight maintenance and inspection of the line.