Types of tractive rolling stock and units in a train set in fixed or pre-defined formation as of January 1st, 2015:
- 90: miscellaneous;
- 91: electric locomotive;
- 92: diesel locomotive;
- 93: electric high speed multiple-unit set (power car or trailer);
- 94: electric multiple-unit set, except high speed (power car or trailer);
- 95: diesel multiple-unit set (power car or trailer);
- 96: specialised trailer;
- 97: electric shunting engine;
- 98: diesel shunting engine;
- 99: special vehicle.