I would say about three years ago, it looked as if Frontier yard might close but after recent visits it appears to be getting busier every day. I was on the Harlem bridge this week and could not believe the activity. The yard looked pretty full and more active than its looked in quite a while. I was thinking that maybe they will start using the hump again. Very encouraging to say the least.
What is being done there? Storing cars? Re-crewing trains? Block swaps? Or actual switching?
A lot of cars - by number alone - has no bearing on use of the hump.