Norfolk Southern Train Designations

[batterymule7]

Can anybody tell me the logic behind NS's train designation numbers and what the letters stand for?  For example, NS 24N.  Or U55?  I was really curious about the designations for autoparts trains and time freights that travel the Pokey.

 I have looked all over the net and can't find squat.

Thanks. 

[mackb4]

A  "u" symbol on the Pokey most of the time is for a shifter out of Williamson or Bluefield.

The Kenova jobs,and some road switchers out of Portsmouth,Ohio use a "j" symbol.

Some pushers on the Pokey side I believe  also use a "j" symbol.

All autorack ,and pigtrains use a number 2 (247 west 274 east )(234-218 east) and (233-217 west).

The only true autoparts train the 184,does not run on the Pokey any longer.It combines with the 274 at times.The empties are run on the 185 west.

[batterymule7]

Thanks for the info.  I was curious as I want to make my train names on MS Train Simulator more true to reality.  And just for general knowledge.