Brotherhood and Unity Highway - International Categorization

International Categorization

Since 1975, the road was concurrent with the following routes of the International E-road network:

• European route E61: Villach–Kranj–Ljubljana
• European route E70: Ljubljana–Zagreb–Sisak–Slavonski Brod–Belgrade
• European route E75: Belgrade–Niš–Skopje-Veles–Thessaloniki