The Islamic Republic of Iran Railways (abbreviated as IRIR, or sometimes as RAI) (Persian: راه‌آهن جمهوری اسلامی ایران‎, Rāhāhan-e Jomhuri-ye Eslami-ye Irān) is the national state-owned railway system of Iran. The Raja Passenger Train Company is an associate of the IR, and manages its passenger trains. The Railway Transportation Company is an associate of the IR, which manages its freight transport. The Ministry of Roads & Urban Development is the state agency that oversees the IRIR. Some 33 million tonnes of goods and 29 million passengers are transported annually by the rail transportation network, accounting for 9 percent and 11 percent of all transportation in Iran, respectively (2011).