extension south of 34th St. on #7 line, purpose

[Nick]

At the IRT #7's new station at 34th Street in Manhattan, the tracks continue south. Is there a yard, is it just for a few trains to park in midday, or is future growth with more stations being planned?

[RR503]

1 minute ago, Nick said:

At the IRT #7's new station at 34th Street in Manhattan, the tracks continue south. Is there a yard, is it just for a few trains to park in midday, or is future growth with more stations being planned?

Just a layup yard. Corona doesn't have space for all the cars that'll be needed to run full service with CBTC, so they decided to make up for that fact by building tail tracks down to 25th st. 

All of that said, those tracks are usable depthwise for an NJ connection (not that we should build one). 

[CenSin]

3 minutes ago, RR503 said:

Just a layup yard. Corona doesn't have space for all the cars that'll be needed to run full service with CBTC, so they decided to make up for that fact by building tail tracks down to 25th st. 

All of that said, those tracks are usable depthwise for an NJ connection (not that we should build one). 

I believe that the tail tracks are also long enough to store 4 trains. The switches south of the station allow the trains from either tail track to pull into either side of the platform.