PKP system | UIC nos. | UIC cross-ref
| Letter | Type |
|---|---|
| E | electric |
| S | diesel |
| Locos | M: shunting (manewrowa) P: passenger (pasazerska) T: freight (towarowa) U: mixed traffic (uniwersalna) |
|---|---|
| MUs |
A: railbus (autobus szynowy) - diesel only? D: long distance (dalekobiezny) N: suburban / high and low platforms (niski) R: special purpose - engineers etc. W: high platform (wysoki) - electric only? |
| Electric | Diesel | |
|---|---|---|
| Locos | 01-14: Bo-Bo, 3kV DC 15-19: Bo-Bo, AC 20-34: Co-Co, 3kV DC 35-39: Co-Co, AC 40-49: others |
01-09: mechanical, no multi 10-14: mechanical, multi 15-24: hydraulic, no multi 25-29: hydraulic, multi 30-39: electric, no multi 40-49: electric, multi |
| MUs | 51-64: 3-car set, 3kV DC 65-69: 3-car set, AC 70-74: 4-car set, 3kV DC 75-79: 4-car set, AC 80-89: single car 90-93: 2-car set, 800V DC 94-99: others |
51-59: mechanical, no multi 60-69: mechanical, multi 70-79: hydraulic, no multi 80-89: hydraulic, multi 90-94: electric, no multi 95-99: electric, multi |
| Letter | Use |
|---|---|
| d | non-driving trailer (doczepny) |
| r | driving trailer (rozrzadczy) |
| s | motor (silnikowy) |
suffix letters ('a' and 'b') used for multiple vehicles of the same type in a unit
Digits 1-4: "exchange condition" and country code – see international UIC code
| Digit | Type |
|---|---|
| 0 | misc. track vehicle |
| 1 | passenger loco |
| 2 | passenger MU |
| 3 | freight loco |
| 4 | freight MU - not used? |
| 5, 6 | mixed traffic loco |
| 7 | electric shunting loco |
| 8 | diesel shunting loco |
| 9 | special vehicle |
| Digit | Type |
|---|---|
| 0 | steam |
| 1 | electric, 1 voltage |
| 2 | electric, 2 voltages |
| 3 | electric, multi-voltage |
| 4 | electric + diesel |
| 5 | loco tender |
| 6 | diesel, electric transmission |
| 7 | diesel, mechanical transmission |
| 8 | diesel, hydraulic transmission |
| 9 | other |
| Digit | Use |
|---|---|
| 0 | historic vehicles, incl. steam |
| 1 | < 0.5 MW |
| 2 | 0.5-1.0 MW |
| 3 | 1.0-1.5 MW |
| 4 | 1.5-2.0 MW |
| 5 | 2.0-3.0 MW |
| 6 | 3.0-5.0 MW |
| 7 | > 5.0 MW |
| 8 | not used |
| 9 | not used |
in practice, used to extend serial no.
UIC digits 5-7 → PKP and other classes
passenger loco, electric
• 1-14: EP07, EP08
• 1-15: EP05, EP09
• 1-16: EU07A
passenger loco, diesel
• 1-63: SP32
passenger MU, electric
• 2-12: EN57, EW60, EN61, EN81; 14WE
• 2-13: EN57, EN64, EN71, ED72, EN99
• 2-14: EW58, ED59, EN62, EN63, EN71, ED72, ED74, EN75, ER75, EN76, EN77, ED78, EN78, EN79, EN90, EN96, EN98, ER160; 21WE, 22WE, 31WE, 34WE, 36WE, 45WE, 48WE, L4268, LM4268
• 2-15: ED160, ED161, 19WE, 27WE, 31WE, 45WE, 58WE
• 2-16: 27WE, 35WE
• 2-37: ED250
passenger MU, bi-mode
• 2-42: EN63
• 2-43: 227M
• 2-44: EN63, 36WE, 228M
passenger MU, diesel
• 2-62: 36WE
• 2-71: SN81, SA103, SA104, SA105, SA107, SA109, SA122, SA135
• 2-72: SA108, SA132, SA134, SA137, SA138, SA139, 222M
• 2-81: SN82, SN83, SA101, SA102, SA106, SA111, SA121, SA131, SA135; ex-DB: VT627, VT628; ex-DSB: MR+MRD, Y
• 2-82: SA132, SA133, SA134, SA136, SA140
freight loco
to do
mixed-traffic loco, electric
• 5-14: EP07, EU07, 3E/1
• 5-15: ET22, 30E, 201E, 6Dg
• 5-16: EU07A
• 5-17: EU47, EU160, 111E, 5-170, E483, 594, E4DCU, ES64-F4
• 5-27: E186
• 5-37: EU44, EU45, EU46, EU200, 5-370, E186, E4MSU
• 5-38: 388
• 6-27: E186
mixed-traffic loco, bi-mode
• 5-45: 111De
• 5-47: 111Ed
mixed-traffic loco, diesel
• 5-60: SP42
• 5-62: SM42, SU42, SU4220, TEM2, T448P, 6Dg
• 5-63: SU45, SU46, SU4210, 301Db; ex-DB: BR233
• 5-65: SU160, 111Db
• 5-72: 6Dg
electric shunting loco
NB. also used for diesels!
• 7-13: EL2
• 7-61: SM32, 401Da
• 7-62: SM42, SM48, TEM1, TEM2, Ls1000, S200, T448P
• 7-63: SM31, 16D
• 7-70: 409Da, Ls150a
diesel shunting loco
• 8-61: SM30, SM60, 401Da
• 8-62: SM31, SM42, SM48, 401Da, TEM2, Ls800, T448P, T458
• 8-63: 16D
• 8-71: SM03, 409Da, Ls150a
• 8-81: 409Da, LDH45, TGM40
Last update: 2025-11-15 00:34 GMT