A4 (Croatia) - Route Description

Route Description

The A4 motorway is a significant north–south motorway in the northern Croatia connecting the nation's capital, Zagreb, to the Hungarian M7 motorway at the Goričan border crossing. The southern terminus of the A4 motorway at the interchange in Ivanja Reka represents its junction with the rest of the Croatian motorway network via the A3 motorway. As a part of the road network of Croatia, the motorway is a part of European route E65 and European route E71. The motorway is of major importance to Croatia in terms of the development of its economy, notably tourism, as it represents the shortest and the most comfortable route between Budapest, Hungary and the Adriatic Sea. This particularly applies to tourist resorts on the Istria and Kvarner Gulf islands and to the Port of Rijeka, but it is also true for resorts in the Dalmatia region, served via the A1 motorway. The genuine importance of the motorway as a transit route will be demonstrated upon completion of the proposed expansion of the Port of Rijeka and Rijeka transport node. This expansion is planned to encompass the growth of the Port of Rijeka's cargo handling capacity, improved railroad links and a new Rijeka bypass motorway linking the A6, via a new interchange, to the present routes of the A7 and A8 motorways. The project is, among other goals, aimed to increase traffic along the Croatian part of Pan-European corridor Vb, of which the A4 motorway is a part.

The motorway spans 96.4 kilometres (59.9 mi) between the Goričan border crossing to Hungary and Zagreb–Ivanja Reka interchange on the A3 motorway. Among other cities and towns, it connects to Čakovec via the D20, Ludbreg and Koprivnica via the D530 and D2, Varaždin via the D528, Novi Marof via the D22, Vrbovec and Bjelovar via the D28 state roads and Dugo Selo via the Ž3034 county road. Future development of the motorway will include additional rest areas and a possible expansion of interchanges. The A4 motorway consists of two traffic lanes and an emergency lane in each driving direction along its entire length, except in tunnels where there are emergency bays instead. All existing interchanges are trumpet interchanges, except in Ivanja Reka, which is a modified cloverleaf. There is a number of rest areas along the motorway, providing various types of services ranging from parking spaces and restrooms to filling stations and restaurants. As of October 2010, the motorway has 12 interchanges, providing access to numerous towns and cities and the Croatian state road network. The A4 motorway is concurrent with the D3 state road between the Komin and Ivanja Reka interchanges, although the D3 is not signposted along that section. The motorway is operated by Hrvatske autoceste.

An automatic traffic monitoring and guidance system is in place along the motorway. It consists of measuring, control and signaling devices, located in zones where driving conditions may vary—at interchanges, near viaducts, bridges, tunnels and in zones where fog and strong winds are known to occur. The system consists of variable trafic signs used to communicate changing driving conditions, possible restrictions and other information to motorway users.

The A4 motorway runs through hills and plains crossed by a number of watercourses, requiring a number of bridges, viaducts and tunnels along the route. Particular attention to the environment is also required, due to the several water supply and natural heritage zones.