Translations:Zasady numeracji pociągów/16/en
From TTSK
The train number on its route changes accordingly to the change in the direction of the line's milage, with the following numbering rules applying: 0/1 , 2/3 , 4/5 , 6/7 , 8/9 , e.g. 5100 to 5101 , 12105 to 12104 and so on
