standard gauge: 8,348 km 1.435-m gauge (148 km electrified) (2008)
Roadways:
total: 172,927 km country comparison to the world: 29 paved: 125,908 km (includes 1,429 km of expressways)
unpaved: 47,019 km (2006)
Waterways:
850 km (on Karun River; additional service on Lake Urmia) (2008) country comparison to the world: 70
Merchant marine:
total: 74 country comparison to the world: 60 by type: bulk carrier 18, cargo 34, chemical tanker 4, container 6, liquefied gas 1, passenger/cargo 4, petroleum tanker 2, refrigerated cargo 2, roll on/roll off 3
foreign-owned: 1 (UAE 1)
registered in other countries: 115 (Barbados 2, Bolivia 1, Cyprus 10, Hong Kong 15, Malta 79, Panama 7, Saint Vincent and the Grenadines 1) (2008)