[jmecklenborg]

Again, not only are the NYC subway stations are gigantic structures as compared to any in Paris, so is any and all non-revenue track. The recent Second Ave. subway project included tail tracks north of the temporary terminus that are upwards of 1,000 feet long. When and if the line is extended to 125th St., the new terminal station will again have tail tracks that extend well west of the station box that will itself be built at a deeper level than the existing Lexington Ave. station.

The #7 extension also has tail tracks. If you remember the old #7 terminus, it dead-ended into a brick wall right next to the platform.