feeder line. This system is used by Indian Railways, Russian Railways, Italian High Speed Railways, UK High Speed 1, most of the West Coast Main Line and Crossrail, with some parts of older lines being gradually converted, French lines (LGV lines and some other lines), most Spanish high-speed rail lines, Amtrak and some of the Finnish and Hungarian lines. Boosted voltage For TGV world speed record runs in France the voltage was temporarily boosted, to 29.5kV and 31kV at different times. 25 kV on broad gauge lines In Argentina on the Roca Line (using gauge). In Australia: Adelaide: part of the suburban network (). Commonwealth of Independent States: parts of the network (). Finland: see rail transport in Finland (). India: see rail transport in India and Central Organisation for Railway Electrification (). Portugal: see list of railway lines in Portugal (). 25 kV on narrow gauge lines In Australia: Perth: entire suburban network, see Transperth Train Operations (). Queensland: see rail electrification in Queensland (). In Malaysia: see rail transport in Malaysia (). In New Zealand: see North Island Main Trunk and Auckland railway electrification (). In South Africa: see rail transport in South Africa (25 and ). In Taiwan: see rail transport in Taiwan (). In Tunisia (): see rail transport in Tunisia (). Other voltages on 50 Hz electrification In France, Mont Blanc Tramway and Chemin de fer du Montenvers: In Germany, Hambachbahn and Nord-Süd-Bahn: Multi-system locomotives and trains Trains that can operate on more than one voltage, say 3kV/25kV, are established technologies. Some locomotives in Europe are capable of using four different voltage standards. See also 15 kV AC railway electrification List of railway electrification systems Rotary phase converter References Further reading Keenor, Garry. Overhead line electrification for railways. Electric rail transport