With the highway construction programme in its final stages, theCroatian Parliament passed a bill to build the country's first high-speed line betweenBotovo,Zagreb, andRijeka.[1][2] The estimated 9.2 billionkuna ($1.6bn) project will modernize the existing Botovo–Zagreb line and construct a new line between Zagreb and Rijeka. While the line will ultimately have a maximum speed of 250 kilometres per hour (160 mph), it will initially be limited to 200 km/h (120 mph) due to limitations of the signaling system. It is scheduled to open in 2030.[3]
ThePan-European Corridor X, running from the Slovenian border, through Zagreb, to Serbian border is a likely future candidate for the high-speed extension to this line.[speculation?] It is the most modern Croatian line, capable of 160 km/h (100 mph), fully electrified, and connects most branch lines in Croatia, the Croatian cities ofSlavonski Brod andVinkovci, and thePan-European Corridor Vc towardsOsijek andBosnia and Herzegovina.