IDing a bracket common to modern rolling stock

[Paulman]

I think that it may be a routing card holder.

Regardless of what it is, I included a "representation" of one on this X-29 boxcar, using a small segment cut from a piece of stainless steel intake grill:

Nice hack, Wayne, and a routing card holder sounds logical. But would these crop up on modern cars? These two cars are probably a couple of decades old, but still...

This car has one and looks brand new:


There must be detail parts for this and the defect card. I did locate detail parts for AEI tags, which is a similar level of optional detail.