The valley and the flow of the river represent a very important landscape for Macedonia, from economic, business, traffic and military-strategic aspects. By the river valley there are the main road E-75 highway which is part of the European corridor 10. It connects Macedonia with Serbia and Aegean Macedonia. In the upper stream there is the highway Skopje – Tetovo – Gostivar, which is part of the European corridor 8 that connects Macedonia with Bulgaria and Albania. As part of the same 2 European corridors in the valley of the river, there is also the electrified railway Skopje - Thessaloniki and the railway Skopje – Kicevo. These traffic routes are of great economic and commercial significance for Macedonia. They are the main artery of connection with all other parts of the state and the neighbouring countries.