A fully electrified line connects Rijeka with Zagreb, onwards towards Koprivnica and the Hungarian border; the railway line forms part of the European 5b corridor. A transportation bill to be passed by the Croatian Parliament will see the start of construction of Croatia's first high-speed rail line along this pan-European corridor, enabling theoretical speeds of between 200 and 250 km/h with an average journey speed of no less than 160 km/h. The plan consists of retrofitting the existing track between the Hungarian border and Karlovac to a double-track configuration, as well as constructing new tracks along an entirely new alignment from Karlovac to Rijeka. The line's complete length will be 269 km, or 61 km shorter than the current line. Construction on the new line was announced to start in the autumn of 2008 and was to be completed before the end of 2013. The onset of the economic downturn of the late 2000s has put this project on indefinite hold.