Part of the network This covers ZTM's metro, trams and buses plus the regional trains of Koleje Mazowieckie and SKM, including the S2, S3 and RL lines to Chopin Airport. The rail timetable covers all of Poland, so only stops in the Warsaw area are counted. Warszawska Kolej Dojazdowa (WKD) commuter trains aren't included: the Warsaw guide doesn't cover that line.