U radu je opisan tehnološki proces rada i uloga kolodvora Ploče u odvijanju željezničkog prometa na pruzi M304 (DG-Metković-Ploče). Analiziran je postojeći sustav osiguranja željezničkog prometa u kolodvoru Ploče. Na temelju provedene analize predložene su mjere za unaprjeđenje sustava osiguranja prometa u kolodvoru.In this work technological process of the Ploče railway station and its role in railway operations on the line M304 (DG-Metković-Ploče) is described. The existing train and traffic control system in the Ploče railway station is analyzed. Based on this analysis new measures for improvement of existing train and traffic control system in the station are proposed