U članku su kronološki prikazane promjene u ustroju Glavne direkcije eksploatacije željeznica Zagreb (1947-1949). Glavna karakteristika navedenih promjena bila je ta da su osnovne željezničke jedinice (stanice, ložione, sekcije i radione) postale samostalni privredni subjekti (gazdinstva), tj. imale su svojstvo pravnih osoba. Za željeznice je bilo nadležno savezno Ministarstvo saobraćaja (1945-1948), a kasnije Ministarstvo željeznica (1948-1951) sa sjedištem u Beogradu. Na kraju, kao posebno poglavlje, detaljno je prikazano rukovodstvo Glavne direkcije eksploatacije željeznice Zagreb.According to the Government’s decree of Federal People’s Republic of Yugoslavia dated April 22nd, 1947, the Yugoslavian state railways were a trust of railway companies and railway holdings, together with their main regional boards. The state railways were comprised of: General regional board with its head office in Belgrade (it ran the trust of Yugoslavian state railways), Main regional board for exploitation of railways (Zagreb, Belgrade, Ljubljana, Sarajevo, and Skopje), Main regional board of railway workshops and Main regional board for building railways with its headquarters in Belgrade, together with railway companies and holdings. This paper chronologically demonstrates the changes in the organisation of the Main regional board for exploitation of railways (whose head office was in Zagreb) from 1947 to 1949. The main feature of these changes was that the basic railway units (stations, repair sheds, sections and workshops) became independent economic subjects (holdings) i.e. they had the status of legal entities. The Federal ministry of traffic had jurisdiction over the railways (1945-1948) and it later went to the Ministry of railways, both situated in Belgrade. Finally, an individual chapter describes in detail the top managers of the main regional board for exploitation of railways (in Zagreb). In accordance with the new organisational scheme of the Yugoslavian state railways, General regional board was abolished and the previous five regional boards for exploitation of railways were disbanded into fifteen boards for exploitation of railways. In the territory of the previous Main regional board for Zagreb three new boards for the exploitation of railways were formed: in Zagreb, Karlovac and Vinkovci