M104 railway (Croatia)

The Zagreb Glavni kolodvor–Sisak–Novska railway, officially designated the M104 railway is a 116.757-kilometre (72.549 mi) railway line in Croatia connecting Zagreb to Sisak and Novska. It is a part of the Pan-European Corridor X. It was once a part of Orient Express line.

The western terminus of the railway is located at Zagreb Glavni kolodvor, where it links to the M101, M102 and M202 lines, as well as a number of other railway within the Zagreb railway node. In Sisak, the railway forms a junction to the L217. Further to the southeast, the line links to the R102 and R203 at Sunja and Krivaja wye respectively. At the eastern terminus, in Novska, the railway links to the M103 (to Zagreb via Dugo Selo) and the M105 to Vinkovci and Belgrade.

The M104 railway is electrified using an 25kV 50Hz AC overhead line system and it is single-tracked. The maximum permitted speed along the M104 varies considerably. In Zagreb Glavni kolodvor–Zagreb Klara section the maximum speed is limited to 90 kilometres per hour (56 miles per hour). Between Zagreb Klara and Velika Gorica, the speed is limited to 120 kilometres per hour (75 miles per hour). In Velika Gorica–Turopolje section, the limit is set at 100 kilometres per hour (62 miles per hour), and in Turopolje–Greda section it is increased to 140 kilometres per hour (87 miles per hour). In Greda–Sunja and Hrvatska Dubica–Novska sections, the maximum speed is limited to just 60 kilometres per hour (37 miles per hour), while the limit of 80 kilometres per hour (50 miles per hour) applies between Sunja and Hrvatska Dubica.