The Islamic Republic of Iran Railways 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 to manage its freight transport. The Ministry of Roads & Urban Development (Iran) is the state agency that oversees the IRIR. Some 33 million tons of goods and 29 million passengers are transported annually by the rail transportation network, accounting for 9 percent and 11 percent of the whole transportations in Iran .