Rail corridors around the world play a significant role in international transportation and connecting different regions.
The North-South Corridor is one of the most significant rail routes in Iran, connecting the Caspian Sea to the Persian Gulf. This corridor is part of the International North-South Transport Corridor (INSTC), a multimodal route aimed at enhancing trade between India, Iran, Russia, and Europe. Another important corridor is the East-West Corridor, which links the eastern provinces of Iran to the western borders, facilitating trade between Central Asia and Turkey.