Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Armenian Railways are the national rail operator in Armenia. The 845 km (525 mi), 1,520 mm (4 ft 11 5 6 in) gauge network is electrified at 3 kV DC. The operating environment has deteriorated since the collapse of the Soviet Union. According to the World Bank, Armenian Railways is in dramatic need of investments, including replacement of rolling stock, rehabilitation of the main line between Yerevan and the Georgian border, renewal of electrification, and bridge reconstruction. Rail transport is slow and unreliable, and traffic remains low compared to European countries with similar network, amounting to only 2.6 million tons of freight and 0.85 million passengers in 2004.