[kkysen]

These pictures show level boarding (minimal vertical gap), they just have horizontal gaps. To the extent that there are some small vertical gaps, that is intrinsic to wheels, which change radius over time as the wheel is worn away. The horizontal gaps should be fixed, though. You'd need gap fillers for them on curved platforms.

[wahnfrieden]

The photo showed a 5.5" vertical gap which doesn't seem level or minimal to me

> 14th Street–Union Square northbound 4 trains have a 5.5-inch vertical gap, 59th Street–Columbus Circle northbound B trains have a gaping seven-inch horizontal gap, and Times Square–42nd Street eastbound 7 trains have both: a 5.5-inch vertical gap and a five-inch horizontal gap

https://www.curbed.com/2022/10/mta-subway-platform-gaps-laws...