On an average business day, 400,000 people ride the Flushing line.
There is room between the station and the Flushing Line for such a new level.
There's no mystery as to why the Flushing line is so packed every weekday morning.
This is the only track connection between the Flushing Line and the rest of the subway system.
Forty years ago, the peak combined service on the Flushing line was 36 trains per hour (1 minute, 40 second spacing).
Service on the Flushing line was suspended for 39 minutes, the Transit Authority said.
The Flushing line is a typical subway workhorse that takes people to and from work, school, shopping and such.
Grand Central on the Flushing Line has a single island platform and two tracks.
At the west end of the station platforms are the offices and dispatch tower for the Flushing Line.
He came here from South Korea 12 years ago, he said, and takes the Flushing line every day.