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Type of rail network utilizing trains that run significantly faster than those of traditional rail
High-speed rail (HSR) is a type of rail transport that runs significantly faster than traditional rail traffic, using an integrated system of specialised rolling stock and dedicated tracks. While there is no single standard that applies worldwide, lines built to handle speeds above 250 km/h (155 mph) and upgraded lines in excess of 200 km/h (124 mph) are widely considered to be high-speed. Wikipedia