The project relates to the reconstruction of the existing and the construction of the second track on the section Hrvatski Leskovac-Karlovac with a length of 44.02 km on the railway line M202 Zagreb Gk-Rijeka. The project, in addition to the reconstruction and upgrading of the railway track, includes the reconstruction of the station, electric substation, individual RUCs, bridges, viaducts and other facilities, stops, conversion of the station into stops, installation of an electronic SS device, ETCS level 1 and a control-command infrastructure subsystem with remote control of external elements, electrification with 25 kV/50 Hz system, construction of underpasses and overpasses, new vault roads to abolish existing RUCs, construction of noise protection walls and a closed drainage system.