Train types codes.

[Aero1995]

What exactly do the abbreviated letter codes mean? If anyone knows the remaining part and would like to share it, I would be grateful. Thanks! (I may have hit some of them, but I'm not sure they're good.)

The ones I found in the game are these:
passenger trains:
KM1:?
TLK:?
EIP: Express InterCity Premium
S1: Suburban trains
S41: Suburban trains
REG: Regional
EC: Eurocity

freight trains:
TLE:?
TME:?
LTE:?
TCE:?
TDE:?

[MateuszHU]

After doing some digging, and finding the public PKP document again (thanks to an unnamed someone, you know who you are!) here are the results:

KM1 - Is actually, probably, might be a ROJ -- a wild guess would be that these...
S1, S41, REG - …are just simply regional stopping passenger trains, that have their line number added as well (like in Hungary: S60, Z70 etc., Deutschland™: RE 1, RB 7 etc.) -- please note: S1s and S41s are actually classified as ROJs in the timetable that you access from the dispatcher posts (sometimes RPJs, see footnote)**
TLK - Twoje Linie Kolejowe (quick google search did the thing) is basically, again, what I'm guessing is what the passenger would actually see, but as per timetable they are classified as MPEs or "Inter-regional limited-stop passenger trains" … or as we'd call them: Inter Regios.
EIP - Y e s . -- Well, actually, they are EIJs or National express trains

you get the idea

If you're really curious, just look at the 10th page onwards in this .pdf that I hopefully attached to this reply. I believe that the timetable will always reflect the proper type as per PKP classifications, since... well... it's a simulator with that kind of attention to detail

** if you've driven the S1 and S41s enough, you might've noticed, that the S1s don't stop at every station towards Myszków, only the S41s do that, and on the other way, the S41s don't stop everywhere, but the S1s do towards Katowice, which is why they're classified differently in the dispatchers' timetables - then again, the timetables will be changed after some time

zal_6.3_Reg22_23_v8_EN.pdf

[Bravura Lion]

Only have that in german xD

[krzysk]

km1 = Koleje Mazowieckie/mazovia railways (line 1?)

tlk = Twoje Linie Kolejowe - InterCity operator

S1, S41 = Koleje Sląskie   Lines 1 & 41   see: https://www.kolejeslaskie.com/rozklad_jazdy/liniowy-rozklad-jazdy/

REG = POLREGIO operator see https://koleo.pl/pociag/REG/42906/16-02-2023

Freight trains see there: 

 

Edited February 16 by krzysk

[Aero1995]

Thank you all!😄

[MateuszHU]

Just to add some interesting things, yesterday I was pleasantly surprised by the (at the time oncoming) PXE trains, since they have 6 numbers assigned to them, I though they were freight trains. Turns out they have passenger carriages. Does someone actually know how they are with their priority towards other trains? Is it basically the lowest of passenger trains, but still should get sent before freight trains?

[CN-BX-3N]

18 minutes ago, MateuszHU said:

Just to add some interesting things, yesterday I was pleasantly surprised by the (at the time oncoming) PXE trains, since they have 6 numbers assigned to them, I though they were freight trains. Turns out they have passenger carriages. Does someone actually know how they are with their priority towards other trains? Is it basically the lowest of passenger trains, but still should get sent before freight trains?

Well, you can check full list at:Ia1s6fu.jpg (2300×3140) (imgur.com), wrote the whole list at the bottom-left. usually passengers>freight trains, if something wrong happen, the maintenance train would have the highest priority.

PXE usually needs to give a way to ECE I remember, basically the list in my picture is the priority order

Edited February 23 by CN-BX-3N