[5] Railroads that connected Rijeka, the most important port in Croatia, with Trieste (and further with Vienna), and with Zagreb (and further with Budapest ) were put into service in 1873.

[8] requiring EU member states to separate "the management of railway operation and infrastructure from the provision of railway transport services, on 1 November 2012 the holding was ceased to exist, the three opúerational companies became completely independent: From the same date HŽ Vuča vlakova was incorporated into HŽ Cargo.

The original decision in SFR Yugoslavia was to use 3 kV DC electrification for the railway network.

HŽ was considering the purchase of dual-voltage locomotives, as an alternative to full re-electrification of 3 kV DC tracks, but the idea was scrapped for good as all electrified railways in Croatia are now using 25 kV/50 Hz.

As far as the infrastructure is concerned, the specified speed can currently be achieved on part of the international corridor Novska - Tovarnik, more precisely on the relatively short sections Novska-Okučani and Vinkovci-Tovarnik.